aspiration, bleeding, bloodletting, broaching, cleaning out, clearance, clearing, cupping, defecation, depletion, discharging cargo, drafting, drainage, draining, drawing, egress, elimination, evacuation, excretion, exhausting, exhaustion, milking, off-loading, phlebotomy, pipetting, pumping, removal, siphoning, sucking, suction, tapping, unloading, venesection, venting, voidance, voiding