Meaning

adjective (informal) small and of little importance

originThe noun is borrowed from southern French picaillon, pécaillon, picayon (“type of small foreign coin; (informal, especially in the plural) cash, money”), and from its etymon Occitan picalhon, picaioun (“cheaply made Savoyan-Piedmontese coin that was rapidly demonetized; (by extension) cash, money”), probably from Occitan piquar (“to ring (bells); to knock, strike”) (referring to the clinking of…

Etymology from Wiktionary, CC BY-SA 3.0