Special

1. Chief in excellence.
2. Appropriate; designed for a particular purpose, occasion, or person; as, a special act of Parliament or of Congress; a special sermon.
3. Particular; peculiar; different from others; extraordinary; uncommon.
4. A particular.
5. One appointed for a special service or occasion.
6. Limited in range; confined to a definite field of action, investigation, or discussion; as, a special dictionary of commercial terms; a special branch of study.