[f. CAVE v.3 + -ING1.] The action of CAVE v.3, lit. and fig.; usually caving in.

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1857.  R. Tomes, Amer. in Japan, xiv. 330. Stakes or palisades are driven in along the cuttings, to prevent the earth from caving.

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1865.  Daily Tel., 18 Oct., 7/4. There will be such a caving-in and bulging-out of worthless party walls some day as will ruin speculators.

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1870.  Echo, 11 Nov. The public regard it suspiciously. They seem to think it the prelude to ‘caving in.’

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