Rub-A-Dub is a 9 letter English word. It's valid Scrabble word worth 5 points. It's valid Words with friends word worth 7 points.
You can make 78 anagrams from letters in rub-a-dub (--abbdruu).
First recorded in 1780-90; imitative
And then we made a rub-a-dub on a goat-skin drum, which was hanging on a stump for visitors.
"That would not be rub-a-dub," she said; then she buried her little, fat face on his shoulder and sobs shook her frame.
Swinton, his ear tuned to the outer distances of the void, caught a soft faint rub-a-dub, rub-a-dub!
She did not wish to be interrupted now; she wanted to find Iris to tell her of the sad fate of rub-a-dub.
A little French drummer, singing to his rub-a-dub, and the agreeable yell of a dog, complete the vocal performers.
Wolf gave a grunt like one of his pigs, and began his song of "rub-a-dub."
Ever and anon you hear the rub-a-dub of the drums, as new detachments pass on towards the Corso.
And away he ran among the trees in search of his pigs, while Eric heard his little drum, and his song of "rub-a-dub, halloo!"
"rub-a-dub is to be buried exactly at eleven o'clock," said Iris.
No dictionary in my possession has rub-a-dub; by and by the lexicographer will admit this, as yet, half-wild word.