Frap, v. t. [Cf. F. frapper to strike, to seize ropes. Cf. Affrap.].
To draw together; to bind with a view to secure and strengthen, as a vessel by passing cables around it; to tighten; as a tackle by drawing the lines together. Tottem. [1913 Webster]
To brace by drawing together, as the cords of a drum. Knoght. [1913 Webster]