8 letters · 18 points in Scrabble
noun substituting the name of an attribute or feature for the name of the thing itself (as in `they counted heads')
originFrom Late Latin metonymia, from Ancient Greek μετωνυμίᾱ (metōnumíā, “change of name”), from μετά (metá, “other”) + ὄνομα (ónoma, “name”).
Etymology from Wiktionary, CC BY-SA 3.0