RhymeZone: offtake definitions

Definitions of offtake:

verb: (obsolete) To take off; take away.
noun: A point or channel of drainage or off-flow; offlet.
noun: (mining) The removal of oil (or an industrial chemical) from a storage facility.
noun: An act of taking off; specifically, the taking away or purchase of goods.
noun: Something taken off; a deduction.

(Definitions from Wiktionary)