(geology) A linear channel eroded through bedrock by the passage of glacial ice.

(rare) A surname originating as an occupation.

The dung of sheep. / (colloquial) A remote control. / (colloquial, dated) A boy servant, or page. / (slang) A policeman.

(uncountable) The process of concretizing a general principle or idea by delineating, particularizing, or exemplifying it.