Ha! Well done. Milk Hill of course, then there’s Tan Hill (Ann’s Hill)...
To the east there is 'Milking Bushes' at Everleigh (& nearby the renowned Goa Balti). Near Redlynch there is Milkhills Farm, known as Mylkehill in 1563, and there is a Milkwell near Whitesheet. Can't think of any others though unless you count Bottlesford :)