a really large or sizeable object. The main focus being put on wild animals, however, It could relate to any object that causes a reflex dropping of jaw.
Whitetail deer, tom turkeys, rainbow or brown trout.

My God, that deer is a thooster!! Look at the size of its rack!!
by sevobuck September 14, 2010

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Top Definition
noun; a reference to anything that is bigger than the usual size
"That cigar is a thooster!"
by Bidgit July 24, 2009

The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt