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airdrop

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A free gift of digital coins or tokens sent to users' wallets

noun
/ˈɛrˌdrɒp/

Jargon

: airdrop

And then there's I think Tornado Cash had an AirDrop a couple of weeks back.

Examples

There will be no airdrops until I give the okay.

The Swarm (1978)
Many cryptocurrency enthusiasts eagerly await new airdrops to receive free tokens in their wallets.
The project announced an airdrop to reward its loyal users with exclusive tokens.
After signing up for the service, I received an airdrop of coins directly into my digital wallet.

Surface Forms

airdrop singular

airdrops plural

Morphology

airdrop = air + drop (semi-transparent) = air + drop

The compound form is clear, but the crypto meaning is a metaphorical/technical extension that is not obvious from the components alone.

Etymology

Airdrop in crypto uses the same picture: air plus drop suggests 'dropped through the air'. So an crypto airdrop is like a 'free gift' of tokens placed into users' digital wallets to reward or promote a project.