n.
1.a creature of Teutonic mythology
2.a fiercely vigilant and unpleasant woman
3.a faint constellation twisting around the north celestial pole and lying between Ursa Major and Cepheus
4.any of several small tropical Asian lizards capable of gliding by spreading winglike membranes on each side of the body
Idiom of the Day
catch on
to understand something, to learn about something
I was finally able to catch on and understand the math problem.