This is the 133rd most frequent Afrikaans word.
lank
Long.
Here, 'lank' is used adverbially to signify an extended duration of time.
Hy het lank gewag vir die trein.
He waited long for the train.
Here, 'lank' is used in the phrase 'lankal' meaning 'for a long time', indicating its contextual meaning when used with suffix.
Sy sê lankal dat sy graag wil reis.
She has been saying for a long time that she would like to travel.
In this sentence, 'lank' functions as an adjective, describing the physical length of the wall.