Sc. Obs. [Of obscure origin; cf. northern Sc. stammerel ‘friable stone’ (Jam.).] pl. Detached pieces of limestone.

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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.

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1800.  Headrick, in Commun. Board Agric., II. 256. There are, however, water-worn limestones scattered here and there through land, called stammerers.

3