What is the meaning of Pintle?

The penis.

A pin on the buckle of a belt used to fit into the holes of the belt and hold it at the desired level of tightness.

A pin or bolt, usually vertical, which acts as a pivot for a hinge or a rudder.

An iron pin used to control recoil of a cannon or around which a gun carriage revolves.

the penis

Source: wiktionary.org