An amateur radio operator. Amateur radio is an FCC-Licensed mode of Wireless RF transmission. Similar to CB radio, Amateur radio requires a license, is more geared towards public service, and the range of communications is significantly farther.
"That guy is a HAM. His call is KC9DGM"
by Matt December 05, 2003
When a person is unstoppable or just in the zone in any type sport or competition setting; It can also be defined as going crazy and buying up everything in a store; or even doing something beast like
I went ham on Tyrone out on the court yesterday; I went ham in the Gucci store earlier today; Damn you went ham on them wings
by Nick "The Coach" Charles April 09, 2008