"Embouchre" is the shaping and moving of the lips (and tongue) when playing a brass or other mouth-played instrument instrument. I have to get my embouchre back, which means that I have to play so that I exercise the muscles that are used in playing trumpet, learn again to coordinate the fingering of the valves the the "tightness" of the lips to the specific note, and so on.

Woodwind players also have embouchres. Pipers don't, usually. Once you learn it you don't forget it, but you have to rebuild old roads in the brain (so to speak).

Trumpeters who can double or triple tongue when playing are often very popular for some reason....