鶏口 けいこう
keikō

Noun

1. mouth of a chicken

鶏口 けいこうとなるも牛後 ぎゅうごとなるなかれ。
kēkōto narumo gyūgoto naru nakare.
Better be the head of a dog than the tail of a lion.
Noun

2. leader of a small group