gut

The alimentary canal, especially the intestine.

(informal) The abdomen of a person, especially one that is enlarged

(uncountable) The intestines of an animal used to make strings of a tennis racket or violin, etc.

A person's emotional, visceral self.

(informal) A class that is not demanding or challenging.

A narrow passage of water.

The sac of silk taken from a silkworm when ready to spin its cocoon, for the purpose of drawing it out into a thread. When dry, it is exceedingly strong, and is used as the snood of a fishing line.