offtake

Etymology
From, equivalent to.

Verb

 * 1)  To take off; take away.

Noun

 * 1) A point or channel of drainage or off-flow; offlet.
 * 2)  The removal of oil (or an industrial chemical) from a storage facility.
 * 3) An act of taking off; specifically, the taking away or purchase of goods.
 * 4) Something taken off; a deduction.