pomace

From Late Middle English pomis, pomys (“cider; pulp of plants pressed to extract their juice or oil”), probably from Medieval Latin pōmācium, pōmātium (“cider”), possibly a variant of pomaceum (although first attested later), from Latin pōmum (“fruit; fruit tree”) (ultimately from Proto-Indo-European *h₂epó (“away; off”) + *h₁em- (“to take”), in the sense of something taken off a tree) + -āceum (neuter form of -āceus (suffix meaning ‘belonging to; having the nature of’, forming adjectives)). Doublet of pomade, pomate, and pomatum.

Sense 1.1 (“crushed apples”) and sense 1.2 (“residue from grapes”) were possibly influenced by Middle French pommage (“(cidermaking) apple harvest; apple orchards”) and French poma, pomas, pomat (“residue from apples”) (Northern France).