. (Zool.) Any one of several species of blood-sucking, venomous Hemiptera that sometimes bite the lip or other parts of the human body, causing painful sores, as the cone-nose (Conorhinus sanguisuga). [ U. S. ] [ Webster 1913 Suppl. ]

. A cousin sufficiently well acquainted to be greeted with a kiss; a type of kissing kin. [ PJC ]

n. (Cookery) The portion of the upper crust of a loaf which has touched another loaf in baking. Lamb. [ 1913 Webster ]

A massy fragment from the rich kissingcrust that hangs like a fretted cornice from the upper half of the loaf. W. Howitt. [ 1913 Webster ]

. Infectious mononucleosis; -- so called because often spread by kissing. [ PJC ]

. Any relative more distant than the immediate family, sufficiently well acquainted to be greeted with a kiss, such as a kissing cousin. [ PJC ]

pos>n. Cap or bonnet strings made long to tie under the chin.

One of her ladyship's kissing strings, once pink and fluttering and now faded and soiled. Pall Mall Mag. [ Webster 1913 Suppl. ]