Gin

According to the Old English Dictionary:

(?);

gin

adj. Gaping (?), opening wide :-- Capturam in amne Derentan constructam, quae usitato æt Ginanhecce nuncupatur uocabulo, C. D. iii. 199, 8. Tō ginun hōcum, 413, 10. [Cf. (?) O. H. Ger. ginun ore (vasto).] gin-,gin