fistula

n 1 long pipelike ulcer with a narrow mouth 瘘管. 2 abnormal or surgically made passage in the body （身体中异常的或手术造成的）通道.

fish-plate, fish-slice, fisherman, fishery, fishing, fishing-boat, fishing-line, fishing-rod, fishing-tackle, fishmonger, fishwife, fishy, fissile, fission, fissionable, fissiparous, fissure, fist, fistful, fisticuffs, fit, fit into with, fitful, fitfully, fitment, fitness, fitted, fitter, fitting, fittings, five, Five Love Languages, five o'clock shadow, five pence (also five p, 5p), five-, fivepenny, fiver, fives, fix, fix in with,