FLOCKS is a playable word

flock Scrabble® Dictionary

verb
flocked, flocking, flocks
to gather or move in a crowd
21 Playable Words can be made from "FLOCKS"
   2-Letter Words (5 found)
   3-Letter Words (5 found)
   4-Letter Words (6 found)
   5-Letter Words (4 found)
   6-Letter Words (1 found)