Sentence:  Orion hit a rabbit once; but though sore wounded it got to the bury, and, struggling <WSD>in</WSD>, 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. 
Meaning of the word marked with <WSD> tags:  Moving to the interior of a defined space, such as a building or room.