【化】 coupling
by chance; even; idol; image; mate; spouse
【医】 pair
couplet; join; unite
【医】 sym-; syn-
canal; duct; fistula; guarantee; meatus; pipe; tube; wind instrument
【化】 pipe; tube
【医】 canal; canales; canalis; channel; duct; ductus; salpingo-; salpinx
syringo-; tuba; tube; tubi; tubing; tubo-; tubus; vas; vaso-; vessel