[f. LOP v.3 + -ING2.] Of the sea: Rising and falling in short waves.

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1887.  Spectator, 29 Oct., 1453. Lying-to in a lopping sea.

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1889.  W. S. Gilbert, Foggerty’s Fairy, etc. (1892), 305. I rose and fell in the sulky lopping sea.

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