Words that sound dirty but actually aren't

Bottomry.
Ballcock.

Depending on context: Ejaculation.

(“My dear Holmes!” I ejaculated.)

Spatchcock

Masticate.
Bullocks.
Cocksure.
Angina.
Aer Lingus.

Wankel
Tit-babbler
Prickshaft

Uvula.

Areas.

Puck

Niggardly (which has practically disappeared)
Prick
There is a truck I see regularly from a company called Erection Rapide (they build scaffolds).

Yeah, I was thinking niggardly, too. Not even remotely related to the racist term it sounds like.

Masticate.

Titter.
Nutjob.
Fuchs.
Funk and Wagnalls.

pussy willow

sprint
petcock
cocktail
kumquat
quince

thespian

https://en.wikipedia.org/wiki/Booby
brown booby
blue-footed booby

https://en.wikipedia.org/wiki/Tit_(bird)
penduline tit
elegant tit
great tit

https://en.wikipedia.org/wiki/Swallow
white-thighed swallow
pearl-breasted swallow
welcome swallow

Thespian
Wang computer

Balzac

Gusset
Rim
Probe
Thrust
Gaping

Buttcon

Buttress
Coriolanus
Spanker (nautical term)

There once was a girl named Bianca
Who slept while the ship lay at anchor.
She awoke in dismay
When she heard the mate say,
“Hoist up the top sheet and spanker!”

butt
cock
pussy
dick
shaft
bottom
flagellate
vibrate
erect, erection
come
massage

My all-time fave: Cuntline

Homo erectus