1787 F. Grose Galls, sand-galls, spots of sand through which the water oozes. Norf. and Suf.
?1811 330 (Jam.) at Gaw A few narrow sand gaws.
1876 H. B. Woodward xiii. 409 The Chalk is worn away into pipes and hollows. Note. Called ‘Earth pots’ in Norfolk, and sometimes ‘Sand-galls’.