Urethra(n.) The canal by which the urine is conducted from the bladder and discharged.
Thesaurus Entries
Eustachian tube, Fallopian tube, aqueduct, arroyo, bed, bottleneck, canalization, canalize, carve, chamfer, channel, chisel, conduit, corrugate, course, crack, creek bed, crimp, culvert, cut, dado, defile, dike, ditch, donga, dry bed, duct, emunctory, engrave, entrenchment, fistula, flume, flute, fosse, furrow, gash, goffer, gouge, groove, gulch, gully, gullyhole, gutter, ha-ha, headrace, incise, intestines, irrigation ditch, isthmus, kennel, meatus, moat, narrow, narrows, neck, nullah, ostium, oviduct, pass, pleat, plow, pore, rabbet, race, rifle, river bed, riverway, runnel, rut, salpinx, score, scratch, slit, sluice, spillbox, spillway, strait, streak, stream bed, streamway, striate, sunk fence, swash, swash channel, tailrace, thoracic duct, throat, trench, trough, ureter, urethra, vagina, vas, vessel, wadi, water carrier, water channel, water furrow, water gap, water gate, watercourse, waterway, waterworks, wrinkle