vbl. sb. Surg. Obs. [f. VENTOSE v.] The operation of drawing blood by means of a cupping-glass; cupping. Also attrib.
c. 1386. Chaucer, Knt.s T., 1889. That neither veyne blood, ne ventusynge may ben his helpynge.
1386. Almanak, 52. Mynucyons to be made by blode-lattyng or ventosyng es ful prolytabul.
a. 1425. trans. Ardernes Treat. Fistula, etc., 62. And þer be no blode-later redy, be þer made ventosyng with garsyng atuix þe buttokez.
c. 1440. MS. Linc. A. 1. 17, fol. 299. Of bolnyng or whelynge of garsynge or ventousynge.
1483. Cath. Angl., 400/2. A ventosynge boxe (A. a ventisynge box), guma.
1541. R. Copland, Guydons Quest. Chirurg., N iij. What is ventosyng? It is the puttynge of boxes vpon any membre for to expuls the mater betwene the skynne and the flesshe.