A light, sweet, white wine from the Canary Islands.
A lively dance, possibly of Spanish origin (also called canaries).
Any testsubject, especially an inadvertent or unwilling one. (From the mining practice of using canaries to detect dangerous gases.)
(computing) A value placed in memory such that it will be the first datacorrupted by a buffer overflow, allowing the program to identify and recover from it.
(informal) A female singer, soprano, a coloratura singer.