n. [医] 瘘管;[昆] 细管(尤指鳞翅目昆虫)
fistula 瘘,瘘管
来自拉丁语fistula, 导管,溃疡。来自PIE*bheid, 劈开,裂开,词源同bite, boat.比喻用法。
No certain etymology. The best comparison seems to be with festuca "stalk, straw" and maybe ferula "giant fennel" (if from *fesula): the forms of a "pipe" and a "stalk" are similar. The vacillation between fest- and fist- occurs within festuca itself, and might be dialectal, or allophonic within Latin. [de Vaan]