Someone who wears really skankish clothes with skankish hair and a skankish body...(so if you need to know what these mean basically you...)
See that girl wearing barely any clothes... yeah she's a skank .
Referred to people (mostly girls) that have hygiene issues, live in a trashy home, don't give a shit what they wear or how they wear it.
Or it can be referred to as a slut, (prostitute, whore etc.) which also is a skank pretty much.
Person1: Look at that wild Farrah Abraham over there!
Person2: Yeah! She looks like a complete skank!
A whore that , most of the time, shags men with herpes.
Joseph: Yo Tyrone, look at dat skank over there.
Tyrone: Imma clap dat.
Joseph: No, Tyrone, she has the clap.
Someone who tries to be a hoe but fails
Jeeze I feel sorry for Helen Keller, poor skank