[f. SNIGGER v.1 Cf. SNICKER sb.1] An act of sniggering; a slight or half-suppressed laugh; a snicker.
1823. Bee, Dict. Turf, 162. Snigger, ill-suppressed laughter.
1830. Examiner, 24 Oct., 677/2. He appeared to have a constant snigger lurking under his frown.
1855. J. H. Newman, Callista (1890), 64. Juba indulged himself from time to time in an inward laugh or snigger.
1882. F. Anstey, Vice Versâ, vi. 127. Suspecting that the faint sniggers he heard were indulged in at his own expense.
fig. 1865. Carlyle, Fredk. Gt., XX. v. (1872), IX. 77. Ages which have lost their mirth, and become all one snigger of mock-mirth.