TO EMPTY THE BUTTER-BOAT, verb. phr. (common).—To lavish praise; to BUTTER (q.v.).

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  1865.  The Saturday Review, 7 Jan., 16, 2. That kind of praise which feels like the BUTTER-BOAT down one’s back.

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  1866.  J. H. SKINNER, After Storm, I., 181. He praised some things and gave advice about others, using the BUTTER-BOAT less freely than is customary at volunteer inspections.

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