Snicker \Snick"er\, v. i. [imp. & p. p. {Snickered}; p. pr. &
vb. n. {Snickering}.] [Cf. D. snikken to sob, to sigh.]
[Written also {snigger}.]
1. To laugh slyly; to laugh in one's sleeve.
[1913 Webster]
2. To laugh with audible catches of voice, as when persons
attempt to suppress loud laughter.
[1913 Webster]