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1.
ull
a noise made by many strake/st. agnes students to indicate a range of emotions including (but not limited to) regret, embarrassment, uncertainty, disgust, and hesitant disagreement. used best with a hand motion of both hands, palm out, shaking back and forth as if to say "not me." we think it came from mrs. mouton, but we can't be totally sure.
"i just ran a red light and now that cop is following me. ulll..."
by Tony April 03, 2005
 
2.
ull
A mustache Under the Lower Lip, not connected to a beard or goatee.
Mr. Stevens looks like a nerd without his ull and goatee, but when he hasn't shaved them off he looks like a film star!
by pentozali August 29, 2009
 
3.
ull
Idiotic variation of "you'll or you shall/will". Looks like it should be pronounced, 'uhl', like 'pull'.
Doofus: so ull go to da prom wif me tonite????/////
Zelda: Hell no.
by jay January 02, 2005