I would assume, but confirm: “You mean a jigsaw puzzle?” I’d consider it an odd usage.
Quarter of/quarter 'til: XX:45
Quarter after: XX:15
Minnesotan by birth.
But I think the digital age is killing the “quarter” idiom - it confuses my kids.
Joe
“Knocking up” is also well served by considering the context. For instance when an English friend at a mystery conference said “So I’ll knock you up around seven, then?” it was perfectly, if not immediately, clear what she meant. Of course it helped that we’re both females. And that we were talking about going out for brekkie.
Really? Where in the UK does “Pants” not mean underwear then?
I don’t know anyone (from the UK) that wouldn’t use pants to mean underwear.
People can say panties, briefs, y-fronts, etc, but pants is definitely the main name.
SO, I agree 
I think it’s a matter of age as much as location. While “pants” may have meant underwear in some parts of the country before that, it seems to me that it was only in the 1990s that it became well-used nationwide.
I find the implication of the OP – that there is normally little or no possibility for ambiguity in English – amusing.
I mean if we move to words like make, set, run and so on, these are words with dozens or even hundreds of meanings (depending on whether you count slang or old-fashioned meanings).
This is partly why it’s so hard to get computers to understand natural language; we bring a lot of outside knowledge to bear on trying to understand others.
Native brit here and I would certainly pause after hearing this. I think I’d guess the right meaning, but it does sound old-fashioned to my ears. The Americanism (if that’s what it is) is much more commonly used, IME.
The less ambiguous “Half past two” may also be used, particularly in more formal speech.
Huh? 
I lived in the U.K. (and in several different parts of England) from the early 1950s until the end of the 1980s, and the things that men wear under their trousers - the things that Americans call underpants -were always and everywhere called pants.
Really? I have, several times, heard anecdotes about British people (usually children) coming to America and causing hilarity and embarrassment by asking for a rubber (=eraser), and being misunderstood as asking for a condom. On your account, there should be nothing embarrassing or funny about a British child in an American classroom asking for a rubber.
Yes, I initially mentioned “knocking up” because it always seems to come up in these discussions, and yet I don’t think I (a Brit) have ever heard anyone use it that way. The “getting pregnant” sense, yes I’ve heard that (usually worded something like “he knocked her up”).
Just to add to the confusion. When the rest of us Germanic speakers (at least Germans and Scandinavians) say “half two” (or rather the equivalent thereof) we mean “half an hour before two”. 
Pants has meant underwear in the UK for a lot longer than that. Certainly long before I was born, and that was nearly 40 years ago.
I’ve never met a British person who uses “pants” to mean “trousers”.
You mean because there’s a haitch in it?
ETA: Japan also does the pants=underwear thing. Most of their stolen words are from American English, but occasionally other languages get play.
Pants have always meant underpants in the UK - or at least as long as i’ve been around to wear them, which takes us way back beyond the nineties.
“Rubber” was the usual term when I was a kid, but I think it has gone into decline with the safe sex era.
“Rubber” is an outdated term for a condom. My parents might use it, but no one my age (25) would. I hear someone call them “rubbers” about as often as someone calls something “groovy” or “far out”.
I think if a kindergartner asked a teacher today for a rubber, the teacher would first think “That’s the British term for eraser” and then think “Hey, that means condom here…sometimes.”
It’d be like if a crew was building a deck for your house and the builder said to the construction worker “Hand me a driver*.” The construction worker’s thoughts would go, in order, 1: I don’t know what a driver is, 2: He probably means screwdriver, and 3: We use that word for a person driving a car. It’d be the same for the teacher, I think.
*Not that UKers call them drivers AFAIK.
While I agree that “rubber” is falling out of fashion, I think this statement is untrue. The British meaning is still less well-known than the old-fashioned American meaning.
My dad was brought up and lived all his life in Lancashire in the north west of England and he always calls a torch a flash light. Come to think of it I’ve also heard my uncles on my mothers side use the same term. This could be a linguistic anomaly, but certainly in my family it’s not unusual.
As for pants, again where I come from, pants == trousers.
The only time I’ve ever heard condoms referred to as rubbers is in jokes about a Brit accidentally using the term, intending to mean “eraser”. It may have been common decades ago, but if so, it was before my time.
In northern english (UK) dialects it’s very common for “pants” to mean “trousers”.
Lancashire in particular, but also areas of Yorkshire and the north-east.
It’s less common amoung younger people, but for over 50s you’ll very often hear it used this way.