■ noun a bone framework enclosing the brain of a vertebrate.
↘ informal a person's head or brain.
■ verb informal hit on the head.
Phrases
out of one's ~ informal
1》 out of one's mind; crazy.
2》 very drunk.
~ and crossbones a representation of a ~ with two thigh bones crossed below it as an emblem of piracy or death.
Derivatives
-~ed adjective
Origin
ME scolle ; of unknown origin; cf. ON skoltr .