Sheep farming comes with its own specialist terminology and vocabulary. This list of words and phrases will help you with some of the terms you might come across

Lamb: A young sheep that is under one year old. Lambing is the act of giving birth to a lamb.
Shearling: A young sheep between the January after its birth and its first two teeth (usually at 18 months).
Ram: A male sheep who has not been castrated, of at least 1 year old. This is also known as a tup or buck.
Wether: A castrated male sheep.
Terminal sire: A tup used on ewes (generally Mules or other cross-breeds) to breed fat lambs for slaughter. Terminal sires are usually down breeds.
Ewe: A female sheep. Yoe is a slang term for ewe.
In lamb: Pregnant.
Gimmer: a female sheep in her second year but before she has her first lamb.
Cull ewe: A ewe who is sold for meat as it is no longer fit for breeding.
Mule: A crossbred ewe, most often a cross between a Border or Bluefaced Leicester tup and a hill breed ewe. This is also known as a Welsh Mule (from a Welsh Mountain ewe) or a Scotch Mule if from a Blackface ewe, or other similar geographical terms. Mules usually become terminal sires to produce fat lambs.
Shearing: The process by which the woollen fleece of a sheep is cut off by a shearer, also known as clipping.
Crutching: The removal of wool from the rear end of the sheep to prevent fly-strike. This can also be done pre-tupping, and is also known as dagging.
Dags: Pieces of dried dung which have become stuck to the wool on the rear end of a sheep. This can lead to fly-strike.
Cast: An inability to regain footing, often because the sheep was lying on a hollow or hill, or has a wet/heavy fleece.
Down breed: A breed of sheep with short wool.
Dipping: The full immersion of a sheep in a chemical wash which kills external parasites. This has now been largely replaced by injectable and pour-on insecticides (see pour-ons).
Drenching: the process of giving sheep a liquid medicine or preparation by mouth to treat parasites and other conditions
Gestation period: The length of a pregnancy. In sheep, this is about 147 days.
Fly-strike: An infestation of blowfly maggots. This affects the wool, skin and eventually the flesh.
Raddle: A coloured pigment which is used to mark sheep for a number of reasons. This is also applied to a ram’s chest at tupping time in order to identify mated ewes.
Tupping: The mating season, or mating in sheep.
Rearing: the practice of raising & breeding sheep for meat, milk, wool, and other products.
Lameness: unable to walk correctly because of physical injury or weakness in the legs or feet.
Tail docking: the partial or complete removal of an animal's tail. It can be done for cosmetic reasons, to prevent injury, or for medical reasons.
Hogget: a sheep between 1-2 years of age. Can also refer to the meat from the animal.
Cade lamb: a lamb that has been orphaned or rejected by its mother and raised by hand. They are also known as poddy lambs or pet lambs.
Store lamb: a young sheep that is sold before being finished for slaughter, often bought to be fattened.
Teg: a sheep that is two years old, or the fleece from a two-year-old sheep
Rousie: wool handler.