Meaning

noun a cold pudding made of layers of sponge cake spread with fruit or jelly; may be decorated with nuts, cream, or chocolate

noun a detail that is considered insignificant

noun something of small importance

originFrom Middle English trifle, trifel, triful, trefle, truyfle, trufful, from Old French trufle (“mockery”), a byform of trufe, truffe (“deception”), of uncertain origin.

Etymology from Wiktionary, CC BY-SA 3.0