gid

n.（名詞）
A disease of herbivores, especially sheep, caused by the presence of the larvae of the tapewormMulticeps multiceps in the brain and resulting in a staggering gait. Also called sturdy
蠕蟲性旋回病：食草動物的一種病，尤指羊，主要是由多頭絳蟲 的絳蟲幼蟲引起的，寄生于羊的腦中導(dǎo)致羊搖晃暈倒 也作 sturdy

來源：
Back-formation from giddy
源自 giddy的逆構(gòu)詞