splays

Splays is the verb form of splay, meaning to spread outward or apart.

Fingers splay when extended wide; legs splay when angled out from the body: She splayed her hands on the table.

The word often suggests awkward or ungainly spreading: He lay with his limbs splayed across the bed.

As a noun, a splay is an angled surface, especially the slanted sides of a window or door opening in a thick wall.