ROOTCAP is a playable word

rootcap Scrabble® Dictionary

noun
pl. rootcaps
the loose mass of cells that covers the tip of some roots
93 Playable Words can be made from "ROOTCAP"
   2-Letter Words (8 found)
   5-Letter Words (8 found)
   6-Letter Words (2 found)
   7-Letter Words (1 found)