Definition from Wiktionary, the free dictionary
Etymology 1 
- (transitive) To bind with a flexible rope or cord.
- The fasces were girt about with twine in bundles large.
- (transitive) To encircle with, or as if with a belt.
- The lady girt herself with silver chain, from which she hung a golden shear.
- Our home is girt by sea... - Advance Australia Fair
- (transitive) To prepare oneself for an action.
to bind with a flexible rope or cord
to encircle with, or as if with a belt
Related terms 
Etymology 2 
gird (plural girds)
- (transitive) To jeer at.
- (intransitive) To jeer.
- Men of all sorts take a pride to gird at me.