Answer: bleeder

AnswerCrossword Clue
BLEEDERTank valve
BLEEDERParasite
BLEEDERLeech, e.g.
BLEEDERSponger, leech.
BLEEDERHemophiliac.
BLEEDERRolling infield hit
BLEEDERSpot for a surgeon's clamp
bleederA blood vessel that bleeds freely during surgery
bleederone who bleeds (to lose blood)
bleederA person who bleeds easily, esp. a hemophiliac
bleederA ground ball that barely passes between two infielders