a compass saw for cutting keyholes, etc.
- Keyhole surgery
noun 1. surgery carried out through a very small incision noun any surgical procedure done with a fiber-optic video device and lasers or tiny instruments within a very small incision; also called laparoscopic surgery , minimally invasive surgery Usage Note medicine
- Key indicator
noun a singularly important sign that something will happen Examples The sales of durable goods is a key indicator for the economy.
noun, Cryptography. 1. a sequence made up of letters or numbers that can encode or decode a polyalphabetic substitution cipher one letter at a time.
- Key-in-lock maneuver
key-in-lock maneuver n. A method by which obstetrical forceps are used to rotate the fetal head.