ton-n; 2 Senses

Sense Number 1: a unit of weight

Commentary: Two thousand pounds, or 2240 pounds in Britain.

A large truck can carry three-and-a-half tons of rock salt.
Which weighs more: a ton of bricks, or a ton of feathers?
The realization hit me like a ton of bricks.

WordNet 2.0 Sense Numbers: 1 2

Sense Number 2: a lot, non-physically

Commentary: A general sense of "much" or "many", not intended as an actual measurement.

I've got a ton of work to do today.
There are tons of ways to eat peanut butter.
This game is tons of fun!

WordNet 2.0 Sense Numbers: -