Meaning

verb cause to be attached

verb be attached; be in contact with

verb become attached

originFrom Middle English attachen, from Old French atachier, variant of estachier (“bind”), derived from estache (“stick”), from Frankish *stakkā, *stakō (“stick”), from Proto-Germanic *stakô (“pole, bar, stick, stake”). Doublet of attack. More at stake, stack. Displaced native Old English þīedan.

Etymology from Wiktionary, CC BY-SA 3.0