drain

emptying something accomplished by allowing liquid to run out of it

tube inserted into a body cavity (as during surgery) to remove unwanted material

a pipe through which liquid is carried away

a gradual depletion of energy or resources; "a drain on resources"; "a drain of young talent by emigration"

flow off gradually; "The rain water drains into this big vat"

deplete of resources; "The exercise class drains me of energy"

empty of liquid; drain the liquid from; "We drained the oil tank"

make weak; "Life in the camp drained him"