† ˈcosser, coserObs. [f. coss v. + -er1.] A dealer; a broker; a ‘horse-corser’. So ˈcossery (in 5 coseri), barter, bargaining. 14..Voc. in Wr.-Wülcker 684/40 Hic mango, a cosyr.a1400Morte Arth. 1582 It come neuer of knyghthede..To carpe of coseri, whene captyfis ere takyne.