Doe: The ability to give energy; to suck. Young that draw on this energy are said to suckle. They are filled with life. The word is ancient. When this life is drawn down to be stored for human use it is called milk. The act of drawing it away and into human use is called milking.
Two Very Pregnant Sucks (Does) at an Old Minesite, Nighthawk, Washington
Life goes on.