hinging

noun

1. a joint or device on which a door, gate, lid, etc. swings
2. a natural joint, as of the bivalve shell of a clam or oyster
3. a thin, gummed piece of paper, folded for fastening a stamp in an album
4. anything on which matters turn or depend; cardinal point or principle; pivot

transitive verb hinged, hinging

intransitive verb