Green’s Dictionary of Slang

pike v.2

also pike out
[backform. f. piker n. (2)]

(US) to hold back, to shirk, to act cautiously, often in gambling.

[US]C.L. Cullen Tales of the Ex-Tanks 339: I [...] piked along at a ten-cent table with the last two dollars I had.
[US]‘Hugh McHugh’ Back to the Woods 23: ‘Still piking, eh?’ he chuckled; ‘you wouldn’t trail along after Your Uncle Bunch and get next to the candy man, would you?’.
[US]Ade ‘The Fable of Another Brave Effort’ in True Bills 57: He couldn t bear the Thought of having it said that he was Piking and flying low.
[US]Ade Hand-made Fables 134: If one is accustomed to the Best [...] one must not Pike when telephoning the Orders.
[Aus]‘Nino Culotta’ They’re a Weird Mob (1958) 78: Nino on the metal. Twelve shovelfuls, Nino, an’ no pikin’.
[Aus]J. Hibberd White with Wire Wheels (1973) 199: mal: Simon’s piking out. rod: Yellow belly.
[Aus]D. Maitland Breaking Out 73: No tricks, no piking, no bullshit; and complete and irrevocable commitment on both sides.

In compounds

In phrases