pro 2 
(prō) Informal
(prō) Informal n. pl. pros
1. A professional, especially in sports.
2. An expert in a field of endeavor.
adj.
Professional: pro football.
- light at the end of the tunnel
- light board
- light bread
- light breeze
- light bulb
- light chain
- light-emitting diode
- lighten
- lighten
- lighten up
- lighter
- lighter
- lighterage
- lighter-than-air
- lightface
- lightfaced
- light-fingered
- light-fingeredness
- lightfoot
- light-footed
- light-footedly
- light-footedness
- light-handed
- light-handedly
- light-handedness