Green’s Dictionary of Slang

needle point n.

also needle pointer
[like a needle, he is ‘sharp’; ? an added ref. to the pricking of cards to mark them for cheating purposes]

1. a card-sharp or dice cheat.

[UK]B.E. Dict. Canting Crew n.p.: Needle-point c. a Sharper.
[UK]New Canting Dict. [as cit. c.1698].
[UK]Bailey Universal Etym. Eng. Dict. [as cit. c.1698].
[UK]Grose Classical Dict. of the Vulgar Tongue.
[UK]Lex. Balatronicum.
[UK]Egan Grose’s Classical Dict. of the Vulgar Tongue.

2. an aggressive person.

[Aus]Vaux Vocab. of the Flash Lang. in McLachlan (1964) 254: needle-pointer see nail [i.e. ‘a person of over-reaching, imposing disposition’].
[UK]J. Greenwood Low-Life Deeps 88: ‘Have you seen this Tom Paddock?’ [...] ‘I have,’ says she, ‘a needlepointer at Redditch; a fellow with no more breadth to his shoulders than there is between the eyes of a mouse, and he challenges you to a fight.’.