- kb. gelak, ketawa, gelak-tertawa. There was l. after his remarks Terdengar gelak ketawa setelah dia memberi komentar.
- A movement (usually involuntary) of the muscles of the face, particularly of the lips, with a peculiar expression of the eyes, indicating merriment, satisfaction, or derision, and usually attended by a sonorous and interrupted expulsion of air from the lungs. See Laugh, v. i.
Source: Webster's Unabridged Dictionary