1) Slips or cuttings of plants, especially whitethorn, set in the ground to form a hedge.
c.1560 lay qwycksett … the Spring is at hand, Woodsome
1609 diverting the King’s way … in Danby Lawndes … by digging and setting of quicksetts, Danby. It came to mean ‘hedge’ early in its history via the compound ‘quickset hedge’: c.1530 dyd hew and cut down a great part of the quyk sett or spryng growing in and aboute the … two closez, Kirby Misperton
1580 ‘a certain hedge or quicksette’, Dewsbury
1597 Milncroft field as inclos’d with Quicksetts, Beeston.