From Dragon Ball Encyclopedia, the ''Dragon Ball'' wiki
The Antenna Beam (角 ビーム, Tsuno Biimu) is an energy beam attack.
The user fires a bolt of electricity from their antennae and shocks their opponent, stunning them.
The Antenna Beam was first seen when Son Goku invaded Muscle Tower – one of the main bases of the Red Ribbon Army – and faced Buyon. The monster used this attack to daze Goku, allowing Buyon the chance to try and swallow him, however, Goku quickly escaped from the creature's mouth.
It was next seen at the 23rd Tenkaichi Tournament where it was used by Piccolo. After Goku hit Piccolo with a double punch driven by a Feet Kamehameha, Piccolo quickly retaliated with the Antenna Beam. Goku was sent crashing to the ground and left vulnerable to a follow-up attack, however, Kami intervened and blocked it.
- 角 (tsuno) = horn
- ビーム (biimu) = beam