When used as a verb.

The act of inflicting violence against another person - to mel someone in.

Although the use of this term appears to have died down somewhat, the most frequented use of the word would be in the north of England, particularly around the Humberside area, circa mid-late 90s in particular.

An awesome person who's probably the best person you've ever seen or heard of. A guy named Mels, usually has black or dark brown hair, is intelligent, nice, sexy and great. You're very lucky if you've ever met a guy named Mels.

Malicious Evil Leech

always single

mel is awesome and i love her

Usually works as an adjective and comes from the Hebrew word "Melech" or "King" in English.
The word Mel can be used when expressing your love and spiritual attachment to a certain person by saying "Yamel".
The word has been a backbone of the Hebrew slang for the past 2 years and is used by many people and teens in particular in Israel.

Mel is the most handsome human being on this earth. If you ever meet a human named Mel, please treat them like the royalty they are.