trombonecommon nounverbSyllable DecompositiontromboneEtymologyexpandfrom Italian trombone, see tromba and -one: 'large trumpet' see tromblon.Definitions1. First person singular indicative present of tromboner.expand2. Third person singular indicative present of tromboner.expand3. First person singular subjunctive present of tromboner.expand4. Third person singular subjunctive present of tromboner.expand5. Second person singular imperative of tromboner.expandSee alsotrombones (v.) trombone (cn.)