(in singing) a vocal tone so produced as to bring the cavities of the nose and head into sympathetic vibration.
[hed-tuh-hed] /ˈhɛd təˈhɛd/ adjective 1. in direct confrontation, opposition, or competition: a head-to-head battle between the two companies. adjective 1. in direct competition noun 2. a competition involving two people, teams, etc
[hahrt-brey-ker] /ˈhɑrtˌbreɪ kər/ noun 1. a person, event, or thing causing . /ˈhɑːtˌbreɪkə/ noun 1. a person or thing that causes intense sadness or disappointment n. 1660s, originally “a fetching lock of hair;” of persons, from 1863; agent noun from heartbreak.
[hahrt-brey-king] /ˈhɑrtˌbreɪ kɪŋ/ adjective 1. causing intense anguish or sorrow. /ˈhɑːtˌbreɪkɪŋ/ adjective 1. extremely sad, disappointing, or pitiful
[hahrt-breyk] /ˈhɑrtˌbreɪk/ noun 1. great sorrow, grief, or anguish. /ˈhɑːtˌbreɪk/ noun 1. intense and overwhelming grief, esp through disappointment in love n. 1580s, from heart + break (n.). Related: Heartbreaking.