1) Changing direction of the wind clockwise, as in: "The wind is veering into the East." 2) To lead a line around a bitt or block, thereby changing its direction for a purchase. 3) To indicate that the relative wind is changing direction toward the stern, as in "Ease the sheets, the wind is starting to veer." 4) To let out rope. "You can veer out about 20 feet of the dinghy painter so it will tow better."