Grindan

According to the Old English Dictionary:

gryndan;

GRINDAN

part. grindende, ic grinde, grynde, ðú grintst, grinst, he grint, pl. grindaþ; p. ic, he grand, grond, ðú grunde, pl. grundon; pp. grunden To GRIND, grind together, rub, rub together; molere, commolere, terere, frendere, allidi, collidi :-- Ic seah searo grindan wið greóte I saw a machine grind against the dust, Exon. 108 b; Th. 414, 30; Rä. 33, 4. Ic grynde molo, Ælfc. Gr. 28, 3; Som. 31, 3. Ic grinde commolo, Ælfc. Gl. 36; Wrt. Voc. 28, 77. Ðú grinst thou grindest, Homl. Th. i. 488, 25. Se hæruflota grond wið greóte the floater of the surge [the ship] ground against the gravel, Exon. 52 a; Th. 182, 12; Gú. 1309. Hí grundon ofer me mid tóðum heard frenduerunt super me dentibus suis, Ps. Spl. 34, 19: Andr. Kmbl. 746; An. 373. Twi beóþ æt cwyrne grindende, án byþ genumen, and óðer byþ lǽfed duæ molentes in mola, una assumetur, et una relinquetur, Mt. Bos. 24, 41: L. Ethb. 11; Th. i. 6, 6. Sume ðara munecena cómon to grindanne some of the nuns came to grind, Th. Chart. 447. 1. DER. be-, for-, ge-grindan. grindan