I installed a spam killer on my computer to prevent unwanted emails.

There are many killer languages spoken around the world.

The giant-killers defeated the powerful team in the final match.

Honour killers are a serious problem in some societies.

He was convicted as an honour killer for murdering his sister.

Be careful of killer litter on the streets.

Natural killers are a type of immune cell that can destroy infected or cancerous cells.

I bought some roach killers from the store.

I need to buy some roach killer for my apartment.

I installed several spam killers on my computer to protect against unwanted emails.