Applied to gritty concretions in some soils.

Chiefly Scottish and English regional. A hard or otherwise differentiated nodule in rock, coal, etc.; the central part of such a body. Obsolete.

A concretionary stone composed of small granules resembling mustard-seed; a species of oolite.

Calcareous material that is deposited as nodules within clay and other fine sediments (cf. rance, n.4).

= race, n.8

A stone or mass of rock embedded in a matrix, as in a conglomerate, concrete, etc.

Geology. A flat, roughly circular stone or concretion within a rock. Obsolete. rare.

a phosphatic nodule occurring in the Red Crag of Suffolk.

A stone consisting of a nodule.