Jenny n. : A familiar or pet form of the proper name Jane.

Jenny n. : A familiar name of the European wren.

Jenny n. : A machine for spinning a number of threads at once, -- used in factories.

Example:
How does Jenny Craig work? Is if safe for people that had previous eating disorders?

Taxonomy
Jenny, song, given name, free encyclopedia, EP, Inverted Jenny, sail, Hans Jenny, 867-5309, TV series, Jenny McCarthy, Curtiss JN-4, Genoa, Babel, search, fictional, feminine, The Click.

Defination from the web:
Jenny, Suriname, town in South America. Curtiss JN-4 "Jenny", biplane flown during World War I and later popular for barnstorming. Inverted Jenny, famous United States postage stamp error involving a stamp with an upside down Curtiss JN4. The schooner Jenny, ship that was frozen in the Antarctic ...