Sentence:  And the LORD spake unto Moses and unto Aaron, saying, This is the ordinance of the law which the LORD hath commanded, saying, Speak unto the children of Israel, that they bring thee a red <WSD>heifer</WSD> without spot, wherein is no blemish, and upon which never came yoke. 
Meaning of the word marked with <WSD> tags:  A young female cow, (particularly) one over one year old but which has not calved.