†6.transitive. Nautical. to leg along: to lead out (a rope or ropes) in preparation for use. Cf. sense legn. 12. Obsolete.The precise meaning of this phrase is uncertain, and it is possible that leg along is a noun phrase belonging at legn. Phrases 4 (cf. quot. 1867).
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1867 W. H. Smyth & E. BelcherSailor's Word-bk.Leg along, ropes laid on end, ready for manning.
1881 Naval Encyl. 431/2Leg along, to lead out a rope ready to be manned.