The entrails or contents of the abdomen.
The center of the field.
Courage; determination.
Content, substance.
One's innermost feelings.
The essential, core parts.
The ring in the gambling game two-up in which the spinner operates; the centre.
To show determination or courage (especially in the combination guts out).
To eat greedily.
An organ, such as the heart or colon, that is entirely within the confines of the body.