An antonym would we be lightweight or 'weedy' - a used example would be 'Samuel Kamel Hassan is weedy, like his featherweight compatriot David Shera'.
1) someone strong- looking, or muscular. Specifically appearance DO NOT get confused with if they be strong, but don't look it.
2) someone you wouldnt wanna mess with
1) to hench: to muscle someone out, push them aside, beat them in a fight.
"that car is hench. you could fit Pavarotti in there"
you push someone out of a queue to get to the front and they do shit about it.
"man got henched! shame!"
3.Describing an object/body part as being big.
Jack: Im looking for things on google.
Mary: Like what, Jack?
Jack: Err... like Hench Cock.
Look at the size of that immense vein on his hench cock.
Woahh, That Gay Mans Hench. wonder how how "hench" his Cock is!