From Dragon Ball Encyclopedia
Great Ape Vegeta opens his mouth and fires a pink energy wave at his opponent.
Dragon Ball Z
Great Ape Vegeta used this attack in his fight against Son Goku when Goku was in the middle of performing the Genki Dama. Caught by surprise, Goku took the full force of Great Ape Vegeta's attack and therefore the energy he had collected for the Genki Dama vanished.
It is named Chō-gyarikku Burasutā (超ギャリック ブラスター, Chō-gyarikku Burasutā) in Dragon Ball Heroes.