down escalator
Restroom
Did anyone ever really write with real chalk?
Geoducks are not ducks.
They do look gooey, though. Ew.
It’s usually obvious from context. Sometimes I say “muffin, like a cupcake”, if I want to be very clear (and I’m talking about the US version).
Crumpets are different.
A Mexican jumping bean is not a bean - it’s a seed pod with the larva from a moth inside.
Bombay duck is actually a type of dried fish.
A stopcock is neither a contraceptive nor a chastity device.
Did you guys just do this girl’s homework for her?
Possibly. But she’s got over 6,000 posts on varied subjects here, so it wasn’t a glaringly obvious homework question OP like the infamous *To Kill a Mockingbird *one.
But is does stop something, and if placed in an… unconventional… location it could stop a cock, and thus also function as a contraceptive.
I believe that’s what pharmacists would call an off-label usage.
Also, OW!
Fortunately you don’t need a prescription for one.
Spotted dick. “I never saw a spotted dick/nor do I hope to see one…”
We got coconut and pineapple, but not grapefruit.
Catgut is, in fact, usually made from gut, but our kitties are still safe.
Certain clenched muscles are allowed to rest there. 
Eggplants are not eggs, but they are at least plants.
A boiled baby is mercifully, not a scalded infant.
An express lane usually isn’t.
Blueprints are rarely blue any more.
Generally, people don’t sell garages at garage sales.
A computer mouse is not a mouse.
A cat walk is for walking, and while not literally for cats, it’s walking in a place (high and narrow) and of a nature (stealthy, good for observing those below) that cats are inclined to.