Sentence:  Orion hit a rabbit <WSD>once</WSD>; but though sore wounded it got to the bury, and, struggling in, the arrow caught the side of the hole and was drawn out. Indeed, a nail filed sharp is not of much avail as an arrowhead; you must have it barbed, and that was a little beyond our skill. Ikey the blacksmith had forged us a spearhead after a sketch from a picture of a Greek warrior; and a rake-handle served as a shaft. 
Meaning of the word marked with <WSD> tags:  Formerly; during some period in the past.