Definitions
1.NounIn medieval music, a rhythmic linear technique using the alternation of notes, pitches, or chords. A single melody is shared between two (or occasionally more) voices such that alternately one voice sounds while the other rests.
2.NounA narrow passageway or opening between buildings, typically designed to facilitate access or movement between separate architectural structures.
3.NounAny small gap or opening; often used to describe a narrow space that allows for movement or connection between two areas.