quacky

1. (of a voice or sound) That resembles the quack of a duck.Examples: "With progressive prostration (which is more marked in young infants) and with a tone to the cry which is a sort of a thin, crowing, quacky sound, points to the existence of retropharyngeal lymphadenitis."; "Suddenly I hear a roar like a lion then a gagging sound like someone is getting choked to death then high-pitched voices little quacky voices like the Chipmunks on the radio calling back and forth to one another Christmas Christmas time is here time for joy and time for cheer."

2. (US, of land or a crop) Infested with quackgrass.Examples: "1859, The Cultivator, Volume 7, 3rd Series, page 54, After the first hoeing of a quacky crop, it is often well to go over it lightly in the middle of a hot day, just skimming the surface of the soil, and cutting off the young grass."; "Always work quacky land when it is driest."; "1914, New York (State) Department of Agriculture, Annual Report, Volume 1, Part 2, page 544, When would you advise plowing sandy soil that is quacky for beans?"US