spavin in Finnish

(countable) A bony swelling which develops in a horse's leg where the shank and splint bone meet, caused by inflammation of the cartilage connecting those bones; also, a similar swelling caused by inflammation of the hock bones.

(mining) The stratum of earth underneath a coal deposit.

(farriery, veterinary disease) To cause (a horse or its leg) to have spavin (noun sense 1.2).