synonym | metrosubwaysubway systemunderground |
hypernym | railroadrailroad linerailwayrailway linerailway system |
synonym | tube-shaped structure |
derivation | tubal |
domain topic | anatomygeneral anatomy |
hypernym | anatomical structurebodily structurebody structurecomplex body partstructure |
hyponym | cochleasalpinxtubulevasvessel |
hypernym | ride |