IPA: /ˈθɜːrəʊpɪn/
KK: /ˈθɜroʊpɪn/
A swelling that occurs on the sides of a horse's hock joint, which can sometimes cause lameness.
The veterinarian examined the thoroughpin on the horse's leg to determine if it was causing any pain.
The word 'thoroughpin' originates from Old English 'þurh' (meaning through) and 'pin' (meaning a small rod or peg). The term refers to a type of pin that goes through something, often used in the context of fastening or securing.
Think of 'through' ('þurh') and a 'pin' as a small rod that goes through something to hold it in place.