1. [1910s+] (orig. US) to hit.
2. [1930s+] (orig. US) to kill.
3. [1950s+] (orig. US, also bap) to walk, esp. in a carefree, bouncy way.
4. [1950s+] (US) to fight (with a weapon); thus bopping n., fighting.
5. [1950s+] (orig. US) to dance; thus bopping n., dancing.
6. [1970s+] (US) to have sexual intercourse.
7. [1980s] (orig. US) to ride, i.e. a bicycle or car.
8. [1990s+] (orig. US) to look for someone to seduce.
[1960s+] to keep moving, to wander about rather than stay put; to visit briefly.
[1950s] (US teen) to enjoy oneself, to go out on a spree.
see under baloney n.
[20C+] (US) to faint.
see bang one’s bishop under bishop n.2
[1970s–80s] (N.Z. prison) to improve the tailoring of prison-issue clothing; thus bopped-up, enhanced.