What is snog meaning?

As an AI language model, I can provide you with the definition of the word 'snog.' Snog is a slang term that originated in the UK. It means to kiss or make out with someone passionately. Snogging is usually associated with romantic or sexual activity, and it involves using lips and tongues to express affection or desire. The term can be used in different contexts, such as snogging in public, snogging someone you like, or snogging someone you just met. The word 'snog' is not commonly used in other English-speaking countries like the United States, where the equivalent slang term for kissing is 'making out.'