Get some before they are gone! 20% off Peanut Butter Energy Gel. Gu Energy Gel. Created for daily training and competition, GU Energy Gel packs energy-dense calories in a portable packet to help sustain energy demands of any duration or activity.
A microphone, colloquially nicknamed mic or mike (/ËmaÉªk/), is a transducer that converts sound into an electrical signal.
Wiktionary(0.00 / 0 votes)Rate this definition: 1  whistle(Noun) A device designed to be placed in the mouth in order to make a whistling sound. 2  whistle(Noun) An act of whistling. 3  whistle(Noun) A shrill, high-pitched sound made by whistling.  whistle(Noun) Any high-pitched sound similar to the sound made by whistling.