spotface

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• spotface — 1. noun a shallow circular or cylindrical recess, machined on (for example) a cast part to offer a flat face against which to seat a fastener; a shallow counterbore …   Wiktionary

• spot|face — «SPOT FAYS», transitive verb, faced, fac|ing. to face (a spot) around a hole drilled for a bolt or screw: »The heads…drill and countersink holes, spotface them…and face the outer surfaces (Newsweek) …   Useful english dictionary