Answer: syphons

AnswerCrossword Clue
syphonsA pipe or tube used to convey liquid upward from a container and then down to a lower level by gravity, the liquid being made to enter the pipe by atmospheric pressure
syphonsA tubular organ in an aquatic animal, esp. a mollusk, through which water is drawn in or expelled
syphonsSYPHON, to draw off through a tube, also SIPHON