TECTUMS is a playable word

tectum Scrabble® Dictionary

noun
pl. tectums or tecta
a rooflike structure
65 Playable Words can be made from "TECTUMS"
   2-Letter Words (9 found)
   3-Letter Words (23 found)
   5-Letter Words (4 found)
   6-Letter Words (3 found)
   7-Letter Words (1 found)