spotface

 

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spotface

Wikipedia

From spot +‎ face.

spotface (plural spotfaces)

1. a shallow machined face, especially a shallow circular or cylindrical recess, machined on (for example) a cast part to offer a flat face against which to seat a fastener (often a shallow counterbore).

spotface (third-person singular simple present spotfaces, present participle spotfacing, simple past and past participle spotfaced)

1. (transitive) to create or fashion a spotface

   Hypernym: face

• countersink

• postface