Sentence:  For their present position, he drew an inverted V. Then he drew a <WSD>line</WSD> and on either side he inscribed landmarks, ridges, passes. At the other end he drew a number of inverted Vs to represent the Arapaho village. 
Meaning of the word marked with <WSD> tags:  A path through two or more points ("compare ‘segment'''); a continuous mark, including as made by a pen; any path, curved or straight.