羽は交がい

は

が

い

Meanings

1

wings; pinion

Rare standalone noun; almost exclusively used in the compound 羽交い締め (はがいじめ, full nelson hold). The sense refers to a bird's wing or the pinion joint.

「羽は交がい締じめ」の「羽は交がい」は、鳥とりの翼つばさの付つけ根ねを指さす古ふるい言こと葉ばだ。
The 羽交い in 羽交い締め is an old word referring to the base of a bird's wing.