Lisp \Lisp\ (l[i^]sp), v. i. [imp. & p. p. {Lisped} (l[i^]spt);
p. pr. & vb. n. {Lisping}.] [OE. lispen, lipsen, AS. wlisp
stammering, lisping; akin to D. & OHG. lispen to lisp, G.
lispeln, Sw. l["a]spa, Dan. lespe.]
1. To pronounce the sibilant letter s imperfectly; to give s
and z the sound of th; -- a defect common among children.

2. To speak with imperfect articulation; to mispronounce, as
a child learning to talk.

As yet a child, nor yet a fool to fame,
I lisped in numbers, for the numbers came. --Pope.

3. To speak hesitatingly with a low voice, as if afraid.

Lest when my lisping, guilty tongue should halt.
--Drayton.