A reward in crypto tokens given to people interested in a cryptocurrency. Delivered to users who have crypto wallets, airdropped tokens are a way of spreading the word about a new coin or some new blockchain feature. Users may be required to post information about the crypto or mention it in a blog or article, or they may not have to do anything but just sign up or be an existing token holder. Unfortunately, airdropped tokens have also been part of an overall scam to make money and run for the hills. See
crypto glossary.