[L.; see LAPSE sb.] A lapse, slip or error. Chiefly in the L. phrases lapsus linguæ, a slip of the tongue, and lapsus calami, a slip of the pen.

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1667.  Dryden, Mart. Mar-all, III. (1668), 28. What have I done besides a little lapsus linguæ?

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1713.  Addison, Guardian, No. 121, ¶ 3. He … was unfortunately betrayed into a lapsus linguæ.

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1822.  J. Flint, Lett. Amer., 109. The people committed the lapsus, when they [etc.].

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1893.  Nation (N. Y.), 2 March, 165/2. The following … is a lapsus calami whose occurrence it is quite impossible to understand.

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