TOMBOLOS is a playable word

tombolo Scrabble® Dictionary

noun
pl. tombolos
a sandbar connecting an island to the mainland
87 Playable Words can be made from "TOMBOLOS"
   2-Letter Words (7 found)
   3-Letter Words (19 found)
   6-Letter Words (1 found)
   7-Letter Words (1 found)
   8-Letter Words (1 found)