Definition of "lightfoot"

There was no comfort in the goodliness of spring or the bright sunshine weather, and she who had been wont to go about the doors lightfoot and blithe was now as dowie as a widow woman.

1902, John Buchan, The Outgoing of the Tide

There she alighted from her light-foot beast, / And sitting downe upon the rocky shore, / Bade her old Squire unlace her lofty creast […]

1906, original 1590, Edmund Spenser, The Faerie Queene, III.iii