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To make deep or deeper; to increase the depth of; to sink lower; as, to deepen a well or a channel. It would . . . deepen the bed of the Tiber. Addison.

t each other at the top when raised and folding down one over the other when lowered, for deepening shallow parts in a river.

rnished throne, Burned on the water. Shak. Burning with high hope. Byron. The groan still deepens, and the combat burns. Pope. The parching air Burns frore, and cold performs the effect of fire. Milton.

d of joint by which an overlap joint is changed to a flush joint, by means of a gradually deepening rabbet, as at the ends of clinker-built boats.

To deepen. [Obs.]

To catch or gather with a dredge; to deepen with a dredging machine. R. Carew. Dredging machine, a machine (commonly on a boat) used to scoop up mud, gravel, or obstructions from the bottom of rivers, docks, etc., so as to deepen them.

To deepen and enlarge the spaces between the teeth of (a worn saw). See Gummer.

A punch-cutting tool, or machine for deepening and enlarging the spaces between the teeth of a worn saw.

treme degree; as, intensity of heat, cold, mental application, passion, etc. If you would deepen the intensity of light, you must be content to bring into deeper blackness and more distinct and definite outline the shade that accompanies it. F. W. Robertson.

The act or process of deepening worn lines in an etched plate by submitting it again to the action if acid. Fairholt.