Meaning

noun a state of arrangement or appearance

noun a decoration or adornment on a garment

noun attitude of an aircraft in flight when allowed to take its own orientation

originFrom Middle English trimen, trymen, trümen, from Old English trymman (“to make firm; strengthen”), from Proto-West Germanic *trummjan, from Proto-Germanic *trumjaną (“to make fast; strengthen”), from Proto-Germanic *trumaz (“firm; strong; sound”).

Etymology from Wiktionary, CC BY-SA 3.0