01 a. & adv. Beyond or outside of the lines of a vessel's bulwarks or hull; in a direction from the hull or from the keel; -- opposed to inboard; as, ou…
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Beyond or outside of the lines of a vessel's bulwarks or hull; in a direction from the hull or from the keel; -- opposed to inboard; as, outboard rigging; swing the davits outboard.(Naut.)