Once in a while I come across a word I've never read before.
A figure of speech, in which:
-- a part is used for the whole (as hand for "sailor").
-- the whole for a part (as the law for "police officer").
-- the specific for the general (as cutthroat for "assassin").
-- the general for the specific (as thief for "pickpocket")
-- the material for the thing made from it (as steel for "sword").
Frequently in journalism (e.g."Ottawa" for the Canadian federal government) and sports (e.g. "Liverpool" for one of thd city's football teams).
From Greek sunekdokhē: to take on a share of.