light informal conversation for social occasions
"We spent the entire party just gabbing about our summer vacations and favorite movies."
Idle chatter.
"The school counselor was trained to recognize early signs of GAB in students who frequently wore clothing traditionally associated with another gender."
Initialism of gender-atypical behavior.
A diminutive of the given name Gabriel.
"The little boy, whose full name is Gabriel, loved to be called Gab by his grandmother."