Definition of longcase clock in English:

longcase clock

noun

another term for grandfather clock
  • ‘Two George III mahogany long-case clocks were sold, one for 1750 and the other for 1665.’

Pronunciation

longcase clock

/ˌlôNG ˌkās ˈkläk/ /ˌlɔŋ ˌkeɪs ˈklɑk/