What are compound nouns that end in ful?

There are a few compound nouns that end in "ful", but they are not very common. Here are some examples:

Formal:

* Handful: A small amount that can be held in the hand.

* Mouthful: The amount that can be held in the mouth.

* Spoonful: The amount that can be held in a spoon.

* Barrelful: The amount that can be held in a barrel.

Informal:

* Armful: A quantity that can be carried in one's arms.

* Pocketful: A quantity that can be held in one's pocket.

Note: The "-ful" suffix in these cases is used to create a noun that refers to a quantity of something.

It's important to note that most nouns ending in "-ful" are adjectives, such as "beautiful", "thankful", "careful", etc.