Fatten (verb)

1. To make (an animal) plump or fleshy by feeding it well.
2. To make (someone or something) larger or fuller.

Origin:

Middle english fatten, from old english fættian; akin to old high german fazzen to stuff, latin pātēre to be fat.

Examples:

1. The farmer fattened the pigs for market.
2. She fattened the soup with cream.
3. He fattened his bank account with stock investments.
4. The company fattened its profits by cutting costs.
5. The town is fattening its tourism industry with a new hotel.