This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

v. Present participle of pickeer.

"But still, by the mind's eye, he may be seen, a man harassed below a mountain of duplicity, slinking from a magistrate's supper-room to a thieves 'ken, and pickeering among the closes by the flicker of a dark lamp."

bickering