Squat, a. 1. Sitting on the hams or heels; sitting close to the ground; cowering; crouching.
Him there they found,
Squat like a toad, close at the ear of Eve. Milton.
2. Short and thick, like the figure of an animal squatting. “The round, squat turret.” R. Browning.
The head is broad and squat. Grew.