CAIRNS is a playable word

cairn Scrabble® Dictionary

noun
pl. cairns
a mound of stones set up as a memorial
(adjective) cairned, cairny
64 Playable Words can be made from "CAIRNS"
   2-Letter Words (8 found)
   3-Letter Words (21 found)
   5-Letter Words (12 found)
   6-Letter Words (1 found)