watz up D
It's a wrestling move! made by Jake the snake
28 Dominoes in a Set (of Dominoes)
a d a d d y is just a daddy aka a dad, father or papa
There's no one single word using all the letters, but here are the other options: adust dauts duads gauds adds dads dags daut duad duds dugs dust gads gast gats gaud gust guts stag stud sudd tads...