Inca

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A member of the group of Quechuan peoples of highland Peru who established an empire from northern Ecuador to central Chile before the Spanish conquest.
2. n. A ruler or high-ranking member of the Inca empire.
3. n. A member of any of the peoples ruled by the Incas.

Century Dictionary and Cyclopedia

1. n. One of the princes or rulers who governed Peru or one of its divisions previous to the Spanish conquest.
2. n. [capitalized] A member of the dominant tribe in Peru previous to the Spanish conquest.
3. n. In ornithology: A name of Leadbeater's cockatoo (Cacatua leadbeateri) of Australia, having the crest red, yellow, and white.
4. n. [NL.] The technical specific name of various birds: used only with a genericterm.
5. n. [capitalized] [NL.] A genus of terns or sea-swallows, Sterninœ, related to the noddies, having dark plumage with a bundle of white curly plumes on each side of the head. The only species is Sterna inca (Lesson), now Inca mystacalis (Jardine). See Nœnia.
6. n. A bird of this genus.
7. n. [capitalized] [NL.] A genus of scarabœoid beetles, comprising a number of large robust Mexican and Central and South American forms, usually of a reddish-bronze color, flying actively at midday and frequenting flowering trees.
8. n. A name given about 1850 to some varieties of alpaca cloth.

Wiktionary

1. n. A member of the group of Quechuan peoples of highland Peru who established an empire from northern Ecuador to central Chile before the Spanish conquest.

GNU Webster's 1913

1. n. An emperor or monarch of Peru before, or at the time of, the Spanish conquest; any member of this royal dynasty, reputed to have been descendants of the sun.
2. n. The people governed by the Incas, now represented by the Quichua tribe.

WordNet 3.0

1. n. a member of the Quechuan people living in the Cuzco valley in Peru
2. n. the small group of Quechua living in the Cuzco Valley in Peru who established hegemony over their neighbors in order to create an empire that lasted from about 1100 until the Spanish conquest in the early 1530s
3. n. a ruler of the Incas (or a member of his family)