Obs. [Formation obscure: cf. CAUTER and CULTELER.] A knife-shaped instrument for cautery.
1541. R. Copland, Guydons Quest. Chirurg. (1579), 49. They be applyed to the lachrymalls to consume the superfluous flesh, and [it] is done with a small actuall cautelayre. Lykewise to the temples with a cautelayre to close the veynes.