marbit

Etymology 1
.

Noun

 * 1) A small piece of dehydrated marshmallow, used in breakfast cereals etc.
 * 2) * 2009, Richard W. Hartel, ‎AnnaKate Hartel, Food Bites: The Science of the Foods We Eat (page 70)
 * cereal bits in Lucky Charms. The original marbit was a multi-colored rainbow, but it was not long before new shapes and colors were born. Pink hearts, purple horseshoes, blue moons, and of course, green clovers

Etymology 2
Originally a trade name.

Noun

 * 1)  A kind of bituminous compound for road surfacing.

Noun

 * 1)  The accrued interest on a loan.