Meaning of gain in English
1. what is gained; an increase, addition, or improvement in weight, speed, strength, health, advantage, wisdom etc.
a gain in weight
a productivity gain
2. ｟-s｠ earnings; profits
financial gains
gains and losses
ill-gotten gains
1. get something that you want after a lot of effort; obtain
gain knowledge
gain acceptance
2. get a prize, victory etc. in a competition or contest; win
gain the prize[victory, battle, ...]
He gained much profit.
4. get more of something; increase or improve in; add to
gain weight[speed, strength, ...]
gain in speed[value, health, wisdom, ...]
5. show a time faster than the correct time; become or go fast
My watch gains 3 seconds a day.