Sc. Obs. [Of obscure origin; cf. northern Sc. stammerel friable stone (Jam.).] pl. Detached pieces of limestone.
1793. Ure, Rutherglen, 259. Besides the regular strata, a great number of detached pieces, called Stammerers, are, in many places of the parish, found imbedded in clay.
1800. Headrick, in Commun. Board Agric., II. 256. There are, however, water-worn limestones scattered here and there through land, called stammerers.