quitter

Etymology 1

From Middle English quitter, from Anglo-Norman quiture, quyture et al., specialised use of quiture (“burn mark, burning”), from the participle stem of cuire (“to cook”), or from Latin coctura (“cooking”).

noun

1. (now rare outside Jamaica) Matter flowing from a wound or sore; pus.
   Therfor Sathan … smoot Joob with a ful wickid botche fro the sole of the foot til to his top; which Joob schauyde the quytere with a schelle, and sat in the dunghil. 1395, John Wycliffe, Bible, Job II
2. (farriery) Alternative spelling of quittor (“fistulous wound at the top of a horse's foot”)
3. (obsolete) Scoria of tin.

verb

1. To suppurate; ooze with pus.

Etymology 2

From quit + -er.

noun

1. One who quits.
   Winners never quit and quitters never win.
   I have never been a quitter. To leave office before my term is completed is abhorrent to every instinct in my body. But as president, I must put the interests of America first. August 8, 1974, Richard Nixon, 2:00 from the start, in Richard Nixon's resignation speech, CBSN
   Well, they underestimated Hartlepool, and they underestimated me because I am a fighter and not a quitter! 2001, Peter Mandelson, 4:14 from the start, in 2001 victory speech, ITV
2. (obsolete) A deliverer.