Long in The Tooth

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Long in The Tooth : Phrases


To be getting old.


Daddy needs a new Porsche. The old one is getting a bit
long in the tooth.


Strange as it may seem this phrase's origin is closely related to the origin of the phrase
Don't look a gift horse in the mouth.

The age of a horse can be roughly determined by examining its teeth, since a horse's gums recede as they age. The longer the teeth of a horse appear to be, the older the horse.

This expression derives from veterinary medicine - some animals have teeth that continue to grow much like fingernails. For example rabbits and rats need to gnaw hard objects to wear down their growing teeth.

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