CLOCKS is a playable word

clock Scrabble® Dictionary

verb
clocked, clocking, clocks
to time with a stopwatch
18 Playable Words can be made from "CLOCKS"
   2-Letter Words (4 found)
   3-Letter Words (5 found)
   4-Letter Words (5 found)
   5-Letter Words (3 found)
   6-Letter Words (1 found)