A clock is a device used to measure and keep track of TIME. The term 'clock' can refer to four letter words such as 'SOME', 'FACE', 'SWAT', and 'TIME'. A ten letter word for clock is 'TIMEKEEPER', which refers to someone who is responsible for keeping track of TIME. An eleven letter word for clock is 'CHRONOMETER', which is a device used to measure TIME accurately. A five letter word for clock is 'TIMER', which is a device that can be set to count down a certain amount of TIME. A nine letter word for clock is 'TIMEPIECE', which is a device used to tell TIME. Three letter words for clock are 'nef' and 'oneo', while four letter words for clock are 'teno' and 'SMITE'.