1.emptying accomplished by draining
2.tube inserted into a body cavity (as during surgery) to remove unwanted material
3.a pipe through which liquid is carried away
4.a gradual depletion of energy or resources;
a drain on resources
1.flow off gradually;
The rain water drains into this big vat
2.deplete of resources;
The exercise class drains me of energy
3.empty of liquid; drain the liquid from;
We drained the oil tank
4.make weak;
Life in the camp drained him