Английский разговорный словарь (основной) - ply(2)

v. (-ies, -ied) 1 tr. use or wield vigorously (a tool, weapon, etc.). 2 tr. work steadily at (one's business or trade). 3 tr. (foll. by with) a supply (a person) continuously (with food, drink, etc.). b approach repeatedly (with questions, demands, etc.). 4 a intr. (often foll. by between) (of a vehicle etc.) travel regularly (to and fro between two points). b tr. work (a route) in this way. 5 intr. (of a taxi-driver, boatman, etc.) attend regularly for custom (ply for trade). 6 intr. sail to windward. [ME plye, f. APPLY]