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to hawk
To peddle goods aggressively, especially by calling out.
From Middle English hauken, back-formation from hauker.
Source: The American Heritage Dictionary of the English Language, Fourth Edition
Hawk is one of many English synonyms for the verb "sell":
advertise, auction, bargain, barter, close, contract, deal in, dispose, drum, dump, exchange, flog, handle, hard sell, hawk, hit on, hustle, market, merchandise, move, peddle, persuade, pitch, plug, push, put across, retail, soft sell, soft soap, spiel, sweet talk, trade, traffic, unload, vend, wholesale