(in a lever escapement) a pin on the lever, meeting the safety roller in such a way as to prevent the lever from overbanking.
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Question 1 of 7
What does “blatherskite” mean?
Origin of guard pin
First recorded in 1875–80
Words nearby guard pin
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020