a singularly important sign that something will happen
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.
[lahr-goh] /ˈlɑr goʊ/ noun 1. one of the islands in the Florida Keys. 30 miles (48 km) long; 2 miles (3.2 km) wide.
[kee-lis] /ˈki lɪs/ adjective 1. lacking a or . 2. requiring no or : a keyless lock operated by a series of push buttons.