To take off; take away.

noun. In mining, a subsidiary drainage-level, used where, from the form of the country, the water may be run off level-free.

noun. A point or channel of drainage or off-flow.

noun. A suction; an opening or pipe through which a fluid is drawn off.

noun. A taking off; specifically, a taking of goods off the market by purchase; the amount or value of goods thus taken off the market; a deduction.

noun. Act of taking off; specif., the taking off or purchase of goods.

noun. Something taken off; a deduction.

noun. A channel for taking away air or water; also, the point of beginning of such a channel; a take-off.

verb. To take off; take away.

noun. A point or channel of drainage or off-flow; offlet.

noun. The removal of oil (or an industrial chemical) from a storage facility.

"And in August, Coal India invited bids from overseas miners to enter into contracts for long-term offtake of coal."

deduction  takeoff