1 definition by Revlen

hm

a word mostly women use that institutes intense wonder in the guy, thus giving her such power in only one small grunt-type majiig.

It is also used to make other people wonder what you're thinking about, or is used to pretend you're listening...

guy: "I'm so sorry, I tried calling you."
girl: "hm"

by Revlen March 1, 2006