Definition of "lisp" []

• A speech defect or mannerism characterized by mispronunciation of the sounds (s) and (z) as (th) and (th). (noun)
• A sound of or like a lisp: "The carpenter['s] . . . plane whistles its wild ascending lisp” ( Walt Whitman). (noun)
• To speak with a lisp. (verb-intransitive)
• To speak imperfectly, as a child does. (verb-intransitive)
• To pronounce with a lisp. (verb-transitive)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Looks like the guy with the lisp is going to become a semi-regular on Big Bang."
• "Well, Christian Bale “normal” with lisp is actually Christian Bale American Accent with lisp."
• "Hey look, them kids are hacking in lisp! trackback"