Definition of "Extract" :

noun: a passage selected from a larger work

noun: a solution obtained by steeping or soaking a substance (usually in water)

verb: extract by the process of distillation

verb: calculate the root of a number

verb: take out of a literary work in order to cite or copy

verb: remove, usually with some force or effort; also used in an abstract sense

"Extract a bad tooth."

verb: obtain from a substance, as by mechanical action

verb: separate (a metal) from an ore

verb: deduce (a principle) or construe (a meaning)

verb: get despite difficulties or obstacles

"I extracted a promise from the Dean for two new positions."