名詞 bursa:

1. a city in northwestern Turkey
   同義詞：Brusa
2. a small fluid-filled sac located between movable parts of the body especially at joints

bur.sa

n.（名詞）
【復(fù)數(shù)】 bur.sae[-sô] 或 bur.sas 【解剖學(xué)】
A sac or saclike bodily cavity, especially one containing a viscous lubricating fluid and located between a tendon and a bone or at points of friction between moving structures.
囊：一種囊或囊狀物，尤指任何含有粘性潤滑液且位于肌腱和骨頭間或運(yùn)動(dòng)部位之間摩擦點(diǎn)的小液囊

來源：
Late Latin [purse, pouch]
后期拉丁語 [囊，小袋]
from Greek [skin, wineskin]
源自 希臘語 [皮膚，皮制酒袋]

【引伸】
bur.sal
adj.（形容詞）