self

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The total, essential, or particular being of a person; the individual.
• noun The essential qualities distinguishing one person from another; individuality.
• noun One's consciousness of one's own being or identity; the ego.
• noun One's own interests, welfare, or advantage.
• noun Immunology That which the immune system identifies as belonging to the body.
• pronoun Myself, yourself, himself, or herself.
• adjective Of the same character throughout.
• adjective Of the same material as the article with which it is used.
• adjective Obsolete Same or identical.
• intransitive verb To fertilize or pollinate itself. Used of hermaphroditic organisms.

from The Century Dictionary.

• Same; identical; very same; very.
• Own; personal.
• Single; simple; plain; unmixed with any other: particularly noting colors: as, self-colored.
• A pronominal element affixed to certain personal pronouns and pronominal adjectives to express emphasis or distinction, or to denote a reflexive use.
• noun A person in his relations to that very same person. Self differs from ego as being always relative to a particular individual, and as referring to that person in all his relations to himself and not merely as given in consciousness.
• noun A thing or class of things, or an attribute or other abstraction, considered as precisely distinguished from all others: as, the separation of church and state is urged in the interest of religion's self.
• noun Personal interest and benefit; one's own private advantage.
• noun In horticulture, a flower with its natural plain color; a self-colored flower, as distinguished from one which has become “rectified” or variegated. Compare self-colored.

from the GNU version of the Collaborative International Dictionary of English.

• adjective Obs., except in the compound selfsame. Same; particular; very; identical.
• adjective Having its own or a single nature or character, as in color, composition, etc., without addition or change; unmixed.
• noun The individual as the object of his own reflective consciousness; the man viewed by his own cognition as the subject of all his mental phenomena, the agent in his own activities, the subject of his own feelings, and the possessor of capacities and character; a person as a distinct individual; a being regarded as having personality.
• noun Hence, personal interest, or love of private interest; selfishness.
• noun Poetic. Personification; embodiment.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• pronoun obsolete Himself, herself, itself, themselves; that specific (person mentioned).
• pronoun Myself.
• noun An individual person as the object of his own reflective consciousness.
• adjective obsolete same

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a person considered as a unique individual
• noun your consciousness of your own identity
• adjective (used as a combining form) relating to--of or by or to or from or for--the self