A word used to describe a relatively wide and wet vagina which would look similar to the inside of a moose's mouth. Would be used as an insult directed to a female who is a whore, a slut, fat, or simply has a wide vagina.
"That moosejaw has definitely been pounded more than once!"
"You don't wanna sleep with Emma, she has a moosejaw...you can fist her and she wouldn't feel a thing!"
by I don cah September 30, 2011
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A sexual act during which the male's mouth is completely open and is placed over the vagina while humming.
Guy: Bro, last night I moosejawed my girl and she fucking melted!
Other guy: Dang, I should try that on my woman!
by analqueen2k15 November 19, 2015
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Similar to lockjaw, a painful cramping of the jaw caused by the continual sucking and repetitive up and down motion of giving a blowjob. Usually caused by a large and girthy penis, known as a mooseknuckle.
Oh my god, his dick was so big, sucking him off gave me the worst case of moosejaw.
by John Palumbo November 9, 2007
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A Girl(or guy i guess) who has a nasty squared out long chin like something from a badly drawn cartoon
man i cant believe you reamed her! she had total moosejaw
by flatcura March 21, 2005
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A fraternal brotherhood founded in Washington, DC in 2005, named in honor of the founding principles of the fathers of Saskatchewan. Most honored be Their names that They shall not be named.
"Hey, what do you believe when it comes to politics?"

"It's hard to explain. I'm a member of the Order of the Moosejaw."
by trevdog227 June 13, 2008
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Moosejawing is a sexual act in which the more dominant partner will open their mouth as wide as it will go and clamp onto the vaginal region while humming. No tongue is involved unless it is accidental. This can last for anywhere between 1 and 10 minutes. It basically just warms the female up for penetration.
Nicolas: Kaitlyn, do you want me to moosejaw you tonight?
Kaitlyn: Of course I do baby.

Woman: Oh my gosh, he is such so good at moosejawing!
by analqueen2k15 November 19, 2015
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Moosejawing is a heterosexual and lesbian sexual act during which the more dominant partner places his/her mouth over their partner's vagina and hums. There is no tongue involved, unless accidental. This act can last anywhere between a minute and ten minutes. It serves as a good method of warming up the vagina for penetration.
Jessica: I have a really dry vagina and it makes sex with Chad really unpleasant.
Amber: Why don't you ask him to moosejaw you? You'll be a lot wetter and more comfortable!

Jessica: What is moosejawing?
Stephanie: It is when your boyfriend puts his mouth on your vagina and hums!
by analqueen2k15 December 4, 2015
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