bro 
(brō)
(brō)n. pl. bros
Slang
Slang
1. A brother.
2. Friend; pal. Used as a form of familiar address for a man or boy: So long, bro.
[African American Vernacular English.]
- semiheavy water
- semi-independent
- semi-infinite
- semiliquid
- semiliquidity
- semiliteracy
- semiliterate
- Semillon
- semilog
- semilogarithmic
- semilunar
- semilunar bone
- semilunar cartilage
- semilunar valve
- semilunate
- semimembranous
- semimonthly
- seminal
- seminal duct
- seminal fluid
- seminally
- seminal vesicle
- seminar
- seminarian
- seminarist