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ridg·lingalso ridge·ling (rĭj′lĭng)
A male animal with one or two undescended testicles.
[From obsolete ridgel, perhaps from ridge (from the belief that the undescended testicles remained near the animal's back).]
1. (Veterinary Science) a domestic male animal with one or both testicles undescended, esp a horse
2. (Veterinary Science) an imperfectly castrated male domestic animal
[C16: perhaps from ridge, from the belief that the undescended testicles were near the animal's ridge or back]
or ridg•ling(ˈrɪdʒ lɪŋ)
any male animal, esp. a colt, with undescended testicles.