(law) Abbreviation of United States Court of Appeals for the Tenth Circuit.

(dated, informal, military, World War II) The German Messerschmitt 109 fighter aircraft.

plural of 11-plus examination

plural of 1099

(US, taxation) The main form for US individual income tax filing.

(US, taxation) A form reporting one's nonemployment income from a given source for a year.

plural of 1040

plural of 109

(Internet) The first generation of the World Wide Web, characterized by separate static websites rather than continually-updated weblogs and social networking tools.

(UK politics) The address of the residence in London of the Prime Minister of the United Kingdom. / (UK politics, by extension, metonymically) The title or office of the Prime Minister.