MORTAR is a playable word

mortar Scrabble® Dictionary

verb
mortared, mortaring, mortars
to secure with mortar (a type of cement)
48 Playable Words can be made from "MORTAR"
   2-Letter Words (9 found)
   3-Letter Words (22 found)
   4-Letter Words (14 found)
   5-Letter Words (2 found)
   6-Letter Words (1 found)