1 a : a conventionalized graphic device placed on an object as an indication of ownership, origin, or relationship
b : a graphic symbol (as a hieroglyph or alphabet letter) used in writing or printing
c : a magical or astrological emblem
d : ALPHABET
e (1) : WRITING, PRINTING (2) : style of writing or printing (3) : CIPHER
f : a symbol (as a letter or number) that represents information; also : a representation of such a character that may be accepted by a computer
2 a : one of the attributes or features that make up and distinguish an individual
b (1) : a feature used to separate distinguishable things into categories; also : a group or kind so separated (advertising of a very primitive character)
(2) : the detectable expression of the action of a gene or group of genes (3) : the aggregate of distinctive qualities characteristic of a breed, strain, or type (a wine of great character)
c : the complex of mental and ethical traits marking and often individualizing a person, group, or nation d : main or essential nature especially as strongly marked and serving to distinguish
Merriam-Webster Online Dictionary
"The measure of a man's real character is what he would do if he knew he never would be found out." -Thomas Babington Macaulay
"Our character is what we do when we think no one is looking."
-H. Jackson Brown, Jr.