This morning for some reason, the phrase "pick up where we left off" popped into my head, and I realized it's one of those English (American?) idioms that would be impenetrable to someone new to the language.
"Pick up" in general is mysterious. According to etymonline, the verb phrase is from the 14th century, and relates to the idea of using fingers (as in picking) to lift or take up. The idea of casually obtaining (like "pick up a few things") dates from the early 16th century. The sexual meaning — which naive me had totally forgotten about — is from the very late 17th century. Its use to mean improving gradually is from the mid-18th century, while gaining speed doesn't come until the 1920s.
Tidying up is from around the beginning of the U.S. Civil War, and the cops wouldn't have picked you up until about 10 years after that. One usage the site doesn't mention is pickup basketball. And then there's the question of whether it's two words or one when it's a noun or an adjective, or how adjectival uses become nouns (as in the way "pickup truck" becomes just "pickup").
Despite this substantial list of uses, none of these have the meaning of "start again," as in "pick up where we left off."
Then there's "left off." That doesn't even rate a page on etymonline.
The main use I can think of for that phrase is something like "left off a list." I'm having trouble thinking of another example that uses "left off" to mean "stopped or stopped temporarily."
But probably any adult native speaker of American English would know what "pick up where we left off" means, despite the fact that it's illogical that it should make any sense at all.




















