tongue-lolling bit

a device attached at the center of the mouthpiece to prevent horse's tongue from protruding from his mouth.

Japanese Meaning

馬の口輪の中央に取り付けられ、馬の舌が外へ出るのを防止するための装置

調教師は競技の前に、馬の舌が口金から突き出ないように口金の中央に舌を抑える装置が付いたビットを牝馬に装着した。

Sense（1）

a device attached at the center of the mouthpiece to prevent horse's tongue from protruding from his mouth.

The tongue-lolling bit was devised to overcome these habits.

tongue-lolling bits

（ plural ）