Meaning of firm in English
1. strong and solid, not yielding to a touch or pressure; hard, not soft
firm ground
2. strongly fixed in a position and not likely to move; security in position
He walked with firm steps.
3. strongly felt and not likely to change; determined
a firm belief
4. having steady power or strength
a firm grip
a firm voice
firm2
1. a group of people who work together; a business or company
I set up[established] an advertising firm with friends.