n. the amount of increase in signal power or voltage or current expressed as the ratio of output to input

n. the advantageous quality of being beneficial

n. the amount by which the revenue of a business exceeds its cost of operating

v. increase (one's body weight); "She gained 20 pounds when she stopped exercising"

v. increase or develop; "the peace movement gained momentum"; "the car gathers speed"

v. rise in rate or price; "The stock market gained 24 points today"

v. obtain advantages, such as points, etc.; "The home team was gaining ground"; "After defeating the Knicks, the Blazers pulled ahead of the Lakers in the battle for the number-one playoff berth in the Western Conference"

v. reach a destination, either real or abstract; "We hit Detroit by noon"; "The water reached the doorstep"; "We barely made it to the finish line"; "I have to hit the MAC machine before the weekend starts"

v. win something through one's efforts; "I acquired a passing knowledge of Chinese"; "Gain an understanding of international finance"

v. derive a benefit from; "She profited from his vast experience"

v. obtain; "derive pleasure from one's garden"