drain

sense 1: flow off gradually; "The rain water drains into this big vat"
drain run_out

sense 2: deplete of resources; "The exercise class drains me of energy"
drain

sense 3: empty of liquid; drain the liquid from; "We drained the oil tank"
drain

sense 4: flow off or away gradually; "The water drained from the pipe"
drain flow_away flow_off

sense 5: make weak; "Life in the camp drained him"
enfeeble debilitate drain