11 letters · 24 points in Scrabble
adjective using the name of a part for that of the whole or the whole for the part; or the special for the general or the general for the special; or the material for the thing made of it
originEtymology tree English synecdoche Proto-Indo-European *-ikos Proto-Italic *-ikos Latin -icuslbor. Old French -iquebor. Middle English -ik English -ic English synecdochic From synecdoche + -ic.
Etymology from Wiktionary, CC BY-SA 3.0