close friend, bosom buddy / crony, chum

Short for かも知れない (ka mo shirenai, “may, might, perhaps”).

鴨る: “to make a duck of someone”: to skillfully or cunningly beat out an opponent, such as in gambling or a swindle

鴨川: a city (市 (shi)) in Chiba Prefecture, Japan, on the southeast of the Bōsō Peninsula; the Kamo River in Kyōto Prefecture, Japan; traditionally, the Kamo River downstream from the point of confluence with the Takano River (高野川, Takanogawa)

貨物: freight

岡本: a surname

(chiefly women's speech) first person singular pronoun: I, me

Alternative spelling of 鴨 (“duck”)

a duck / (slang) (from the way ducks return to the same place and are thus easy to hunt) a mark or easy target for a swindle, someone who is likely to lose at gambling or other competition

a surname / any of various places, particularly in Kyoto