One Gross
From Tolkien Gateway
One Gross is a measurement equal to 144 of something (a dozen dozens). It is used at present time and wasn't invented by J.R.R. Tolkien but one gross was the amount of people invited to Bilbo's Birthday Party. However, when Bilbo Baggins called them thus, many were insulted as the term "gross" was not used properly on people (or hobbits).