Crack

barst

(thin space opened in a previously solid material)

breuk

(thin space opened in a previously solid material)

gekraak

(sharp sound made when solid material breaks)

krak

(one who excels)

reet

(vulgar: space between buttocks)

spleet

(narrow opening)

spleet

(vulgar: vagina (only terms derived from "crack" and its equivalents))

kraken

(to form cracks)

kraken

(to break apart under pressure)

kraken

(to become debilitated by psychological pressure)