A large pregnant woman that is usually 6-8 months pregnant. Her belly is quite large at this time and is very irritable, resembling a dinosaur.
In a restaurant:
Tom: You see that pregasaurus over there?
Dan: Hell yeah! How can you miss her?
Tom: Just stay away from her or else she'll make you extinct!
by Harv2234 February 01, 2009
1: A pregasaurus is a pregnant woman that that will destroy anything thats in the way of her and her food.

2: a pregnant lady that will eat anything, its a omnivore (eats plants and meat)
1; Quick everybody hide there's a pregasaurus coming and shes on a war path.

2; jason: hey man who's chocolate is this

brett: i wouldn't touch that it belongs to a pregasaurus

jason: oh shit that was close man that could have been my

last meal

brett: yeah man them pregasurus are vicious creatures
by pregasurus hunter October 12, 2011

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