when your angry but dont wanna say anything so you bite down and tighten that jaw up till you get striations on your jaw line
i'm tight jawed when my security supervisor is locking himself in the office and chatting wit bitches all shift like kip from napolian dynomite and got the audacity to call me on the walkie talkie to go check out shit on site when he just googling all shift!! 
by jay nasty13 January 19, 2009
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The reason Alan Rickman's voice is so super sexy.

"When he was a child, he had a speech disability: his lower jaw was very tight, causing his words to be indistinctive and muffled. He still has a slight speech impediment, it is the tight lower jaw which gives him his distinctive drawl." -IMDB

And by 'drawl' they mean 'ability to make the ladies swoon.'
Alan Rickman has a tight jaw, which caused him to have a sexy voice and made him perfect for the role of the Voice of God in the movie Dogma.
by LadyGodiva October 28, 2006
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shut mouth; no thoughts or sounds from the mouth of a person
Person1: imma do suttin to keep that stupid bitches jaww tight.
person2: slap dat bitch that'll shut her up
by yello January 15, 2004
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