noun

1. a part of a whole, or one individual of a class or group, used as a sample or example of the whole, class, or group; typical part, individual, etc.
2. Informal a (specified kind of) individual or person an unsavory specimen
3. Med. a sample, as of urine, sputum, or blood, for analysis

Etymology: L, a mark, token, example < specere, to see: see spy