In Afrikaans, "Whitney" is typically translated as "Whitney." It does not have a specific meaning in the language beyond being a proper noun.
its not an Afrikaans word
There is no such word in Afrikaans, maybe you spelled it wrong.
The Afrikaans word "single" means the same as in English, referring to a person who is not married or in a relationship.
witty
If you mean in the sense of "Are you ready?" then the word is 'gereed'.
The word "grappie" is Afrikaans for "joke".
lank is a slang word for "much" , a lot. <---- What the? The question was what is "lank" in Afrikaans, not East Rand slang. Lank = Tall or long
heritage day
Eierspaan is an Afrikaans word for an egg lifter.
It means: little boss
Do you mean Afrikaans? In which case: kombuis