رِيحٌ دَرُوجٌ
A wind swift in its course: (S, K:) or not swift nor violent in its course: (TA:) and in like manner قِدْحٌ
an arrow: (S, TA:) or ريح دروج signifies a wind of which the latter part leaves marks (يَدْرُجُ) so as to produce what resembles [the track made by the trailing of] the tail of a halter upon the sand: and the place is called
دَرَجٌ. (L.)