(Naut.) A turn or lashing of spun yarn or small stuff, or a metallic clasp or fastening, uniting the point and shank of a hook to prevent its unhooking or straighening out.
3.
A ratchet movement in a loom.
Mousing hook, a hook with an attachment which prevents its unhooking.
... certainly there was an omen—a glee that had nothing to do with mirth; and more dismaying, perhaps, than his sternest rebuke. If a man is not a laugher by nature, he had better let it alone. The bipeds that love mousing and carrion have a chant of their own, and nobody quarrels with it. We respect an owl or a raven, though we mayn't love him, while he sticks to his croak or to-whoo. 'Tisn't pleasant, but quite natural and unaffected, ... — The House by the Church-Yard • J. Sheridan Le Fanu
... there is a little lounging about the caffe, a little stir on holidays among the lower classes and the neighboring peasants, a great deal of gossip at all times, and hardly anything more. The local nobleman, perhaps, cultivates literature as Leopardi's father did; there is always some abbate mousing about in the local archives and writing pamphlets on disputed points of the local history; and there is the parish priest, to help form the polite society of the place. As if this social barrenness were not enough, ... — Modern Italian Poets • W. D. Howells