Skill

[Sonia]

Abilities.

Often, skillz or 5k1LLz.
Used to announce profiency in something; for example, 13375P34K. [leetspeak]

[Julian]

Talent or ability. Something employers do NOT want in a candidate. They want youth and perhaps an attractive appearance.

[Marquetta]

A Livestock disease of the rectum

[Kai]

A word used by schoolkids from the 1970s to show their extreme joy at doing something impressive.
Normally used by holding both thumbs up (a la The Fonz in Happy Days) and saying Skill! with a big cheesey grin.

[Sonia]

Having talent or abilities.

[Renato]

something your crazy at

[Little_Girl]

For a person to say they are Skill means that they think they are good at something or have just done something great (Skill)
The rules from the Primary School Slang Handbook state:
One must be skill with two Ls and not just one. This has to be clearly stated after the word is said. If a person is Skill with only one L it means they have horses bum disease

[Marquetta]

an ability or talent. Its one of few words that come from Old [Norse]: [skil], and is now often used in exclamation (pl) [signifying] appreciation

[Sommer]

The ability to do something well; expertise.