v. i. [ imp. & p. p. Stammered p. pr. & vb. n. Stammering. ] [ OE. stameren, fr. AS. stamur, stamer, stammering; akin to D. & LG. stameren to stammer, G. stammeln, OHG. stammalōn, stammēn, Dan. stamme, Sw. stamma, Icel. stama, stamma, OHG. & Dan. stam stammering, Icel. stamr, Goth. stamms, and to G. stemmen to bear against, stumm dumb, D. stom. Cf. Stem to resist, Stumble. ] To make involuntary stops in uttering syllables or words; to hesitate or falter in speaking; to speak with stops and difficulty; to stutter. [ 1913 Webster ]

I would thou couldst stammer, that thou mightest pour this concealed man out of thy mouth, as wine comes out of a narrow-mouthed bottle, either too much at once, or none at all. Shak. [ 1913 Webster ]

v. t. To utter or pronounce with hesitation or imperfectly; -- sometimes with out. [ 1913 Webster ]

n. Defective utterance, or involuntary interruption of utterance; a stutter. [ 1913 Webster ]

n. One who stammers. [ 1913 Webster ]

a. Apt to stammer; hesitating in speech; stuttering. -- Stam"mer*ing*ly, adv. [1913 Webster]

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 prevented, and hence it may be considered as a spasmodic inspiration. [ 1913 Webster ]