1) No definition available
The verb is found as the first element in numerous by-names where it seems to have meant ‘to eat’, possibly pejoratively, although that remains speculative: 1301 De Willelmo Pykepasteth’, Felixkirk
1301 De Hugone Pykewastelle, Skelton in Cleveland
1316 John Pykehuskes, Stanley
1379 Nicholaus Pykhauer, Rimington.
2) No definition available
The work-force in the first commercial coal-pits was small and it consisted of a few face-workers, a labourer or labourers who moved the coal to the bottom of the shaft, and a worker on the surface who hauled up the coal. The man hewing the coal was the élite workman and the pick which was his main tool served to identify him: 1486 3 picks, one barrow-man, one bank-man, Cortworth
1601 the said John Boys … shall not at any tyme … digge or gett coles … in Northowram with above three pickes at once
1666 to keepe in worke eighte pickes, South Crosland. This gave way to the term ‘pickman’ which featured prominently in a legal dispute: c.1730 priviledge to sink, digg … with five Workmen Commonly called pickmen and with no greater number at once … he that works the strait work being allways to be reconed one of the said pickmen, Beeston. When a Featherstone miner was killed by falling rock in 1323, a coroner decided that his pick had caused the accident: pro quodam picosio per quem Simon Galpyn fodebat carbones in quodam puteo.
3) To abort or miscarry.
1723 Mary Mangham ... calling her whore ... told her she was with a cubb and if she wud come to the doore she would make her pick it and wud rasle [wrestle] her to pieces, Skipton
1798 A Wye had picked her calf, Sessay.
5) As a verb this could mean to rob or plunder.
6) A regional spelling of pitch, the black substance obtained from the boiling or distillation of tar.
1395 It. pro j barell de pyk, iijs, Whitby
1446 pro rosyn et pyk, York
1510 Item of ylk a barrell terre of pyke, qu, York
1789 pick and tar for pump, Tong. Inventories for South Cave have: 1589 a pick pann
1603 a little panm & a pick pan
1616 a tarpan.