To make shaggy; to cover with shaggy hair or rough material.
From 'be-' + 'shag' (rough, unkempt hair or fiber). This follows the typical 'be-' construction to mean 'make shaggy.'
This is a rare one—'beshag' means to make something all rough and hairy, like when you don't brush your dog and its fur gets all matted and wild.
Complete word intelligence in one call. Free tier — 50 lookups/day.