v.tr.1. To use diligently; wield: ply a knitting needle.
2. To engage in diligently; practice:
plied the carpenter's trade. See Synonyms at
handle.
3. To traverse or sail over regularly: Trading ships plied the routes between coastal ports.
4. To continue offering something to (someone); ensure that (someone) is abundantly served: plied their guests with excellent food.
5. To ask questions or make requests of (someone) insistently.
v.intr.1. To traverse a route or course regularly: The boat plies between the islands on a weekly schedule.
2. To perform or work diligently or regularly: plied at the weaver's trade for 20 years.
3. Nautical To work against the wind by a zigzag course; tack.