giggle

v. (-ling) laugh in half-suppressed spasms. n. 1 such a laugh. 2 colloq. Amusing person or thing; joke (did it for a giggle).  giggly adj. (-ier, -iest). [imitative]

v. t. To laugh with short catches of the breath or voice; to laugh in a light, affected, or silly manner; to titter with childish levity.