Sentence:  Orion hit a rabbit once; but though sore wounded it got to the bury, and, <WSD>struggling</WSD> 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. 
Meaning of the word marked with <WSD> tags:  To strive, or to make efforts, with a twisting, or with contortions of the body.