\Stam"mer*ing\, a.
Apt to stammer; hesitating in speech; stuttering. --
{Stam"mer*ing*ly}, adv.

\Stam"mer*ing\, n. (Physiol.)
A disturbance in the formation of sounds. It is due
essentially to long-continued spasmodic contraction of the
diaphragm, by which expiration is preented, and hence it may
be considered as a spasmodic inspiration.