Gratis comes from the Latin word for "favor;" so in English a party favor is a small item given gratis to everyone attending a party. Gratis is used as both an adjective ("The drinks were gratis") and an adverb ("Drinks were served gratis"). But however it's used, it means "free".

What is gratis claim?

gratis - without payment; "I'll give you this gratis" for free, free of charge.

What does gratis admission mean?

"complimentary tickets"; "free admission" gratis, for free, free of chargeadverb. without payment.