South American insectivorous mammal. Has tough 'armour plates' that protect it from attack. Some varieties can roll into a ball and be completely protected.
As far as I know, not interested in lesbians at all.

Curling into a fetus position in a fight, lookign sort of like an armodillo. Usually one shouts "Please don't hurt me." repetitively while in the position.

A person particularly skilled in basketball. Associated with being very agressive.
Stemming from the habit an armadillo has of rolling up into a ball, which looks significantly like a basketball.

The act of curling up into a ball due to severe period cramps

Someone who ruins a good thing or moment.

To provide weapons to a spanish pickle.

Armadilloed - when someone is shoved in a corner in a moving elevator and dry humped or assaulted with someone's gyrating butt or genitals.
(As if they are trying to enthusiastically burrow into you like an armadillo.)