Sc. [f. SPRAT sb.3] Producing rushes; rush-like, rushy.
1808. J. Veitch, in Edin. Encycl., I. 253/1. A trial was made on a piece of exceeding stiff spratty lee, with two ploughs of Smalls construction.
1886. J. Russell, Remin. Yarrow, iv. (1894), 75. Where it [the soil] is wet and spongy, the grass is long, coarse, and spratty.