Definitions for "Recco"
Avalanche system with two components - The reflector and The detector. The reflector is attached to you, the detector is a hand held device used by rescue services. The reflector radio signals sent out by the detector to find you if you are unfortunate enough to become buried in an avalanche.
The RECCO system is an electronic method of finding a person or persons buried in snow as a result of an avalanche.
reconnaissance (by shortening)
Common contraction for reconnaissance. See aircraft weather reconnaissance.