cotton

From Middle English cotoun, from Anglo-Norman cotun, Old French coton, from (Genoese) Old Italian cotone, from Arabic قُطُن (quṭun), from Aramaic כִיתָנָא / כִיתָאנָא (kittānā) and its Classical Syriac equivalent ܟܶܬܳܢܳܐ (kettānā).

First use appears c. the 1560s, either from Welsh cydun, cytun (“agree, coincide”) (cyduno, cytuno), from cyd, cyt + un (“one”), literally “to be at one with”, or by metaphor with the textile, as cotton blended well with other textiles, notably wool in hat-making.