As "score" can mean "to cut", it makes sense that it's from the same root as this word for big scissors
[DOC] [TLE] Cut | Define Cut at Dictionary.com [PAR] Cut definition, to penetrate with or as if with a sharp-edged instrument or ... See 
more synonyms on Thesaurus.com .... to make a sudden or sharp turn in direction
; change direction suddenly; swerve: ....