HALLOA is a playable word

halloa Scrabble® Dictionary

verb
halloaed, halloaing, halloas
to hallo
24 Playable Words can be made from "HALLOA"
   2-Letter Words (8 found)
   3-Letter Words (7 found)
   4-Letter Words (3 found)
   5-Letter Words (5 found)
   6-Letter Words (1 found)