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adj.
being a single and separate person or thing; "can the singular person be understood apart from his culture?"; "every fact in the world might be singular...unlike any other fact and sole of its kind"-William James
adj.
(used with count nouns) of an indefinite number more than 2 or 3 but not many; "several letters came in the mail"; "several people were injured in the accident"
adj.
a grammatical number category referring to two items or units as opposed to one item (singular) or more than two items (plural); "ancient Greek had the dual form but it has merged with the plural form in modern Greek"
adj.
belonging to or participated in by a community as a whole; public; "for the common good"; "common lands are set aside for use by all members of a community"