a brooch worn on the breast, esp to close a garment
breastpin in American English
(ˈbrɛstˌpɪn)
noun
US
an ornamental pin or brooch worn at the breast or near the throat
breastpin in American English
(ˈbrestˌpɪn)
noun
a pin worn on the breast or at the throat; brooch
Word origin
[1825–35; breast + pin]This word is first recorded in the period 1825–35. Other words that entered Englishat around the same time include: cross section, relativity, runway, structural, torque