Definition of: gut

(gut) noun
1. plural The alimentary canal; an intestine: regarded as indelicate usage.
2. The dried entrails of an animal, used for strings for musical instruments, etc.; catgut.
3. A contracted strait connecting two bodies of water.
4. A strong cord made from fiber drawn out of a silkworm when ready to spin its cocoon, used like catgut for snells, etc.
5. plural Slang Stamina; courage; grit.
—v.t. gut·ted, gut·ting
1. To take out the intestines of; eviscerate.
2. To plunder.
3. To remove or destroy the contents of: The fire gutted the interior of the building.
—adjective Slang
1. Central; basic; fundamental: gut issues.
2. Deeply felt, as though physically experienced: a gut conviction. [OE guttas viscera]
—gut′·ter noun