The story
Compound of egg + butt, as in having an egg-shaped end.
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: On a snaffle with a T-shaped mouthpiece, the egg-shaped side ring that connects to it. Full definition →
Compound of egg + butt, as in having an egg-shaped end.
Etymology from Wiktionary, CC BY-SA 4.0.