means A single part, portion, or fragment of a larger whole — whether an object, a quantity, or a work of art.

from From Old French 'piece,' a part or bit, which English borrowed in the medieval period. Behind it lies Vulgar Latin 'pettia,' widely thought to descend from a Gaulish (Celtic) root meaning 'a bit' or 'a part' — making 'piece' one of the small handful of everyday English words with possible Celtic ancestry sneaking in through Latin and French.