1) Ayrshire 2) Friesian 3) Guernsey 4) Holstein 5) Milcher 6) User 1) Bos taurus 2) Cattle 3) Cows 4) Dairy cattle 5) Dairy cow 6) Dairy device 7) Dairy farm device 8) Dairy farm machine 9) Dairy machine 10) Dairymaid 11) Kine 12) Milch cow 13) Milcher 14) Milk cow 15) Oxen 
• (n.) A cow or other animal that gives milk. • (n.) One who milks; also, a mechanical apparatus for milking cows.
Milk'er noun 1. One who milks; also, a mechanical apparatus for milking cows. 2. A cow or other animal that gives milk. 
Milker is British slang for the vagina.