Definition of "cusping" []

• A formation of cusps (noun)

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• "Maybe the pure giddiness I remember of sailing is a good thing to approach now I'm cusping on middle age .... preempt the whole only 24 hours thingo and just be the nike ad."
• "Sure there are no votes in Defence per se, but let me assure you there are votes in failure, we are seriously cusping a Suez and you are the head honcho, go figure!"
• "They have traceried heads with early types of cusping of about the same date as, or a little later than, the rose window in the east gable; but they are certainly thirty or forty years earlier than those of the lady-chapel."