An incompetent, indolent, or clumsy person.
Any of various nymphalid butterflies of the genus Discophora.
A player having little skill, especially a golfer who duffs.
A racing pigeon that does not perform well.
A cow that does not produce milk.
Specialised, involving detailed knowledge of a restricted topic.
A stenotopic species.
A physician whose practice is limited to a particular branch of medicine or surgery.
Someone who is an expert in, or devoted to, some specific branch of study or research.
Any of several non-commissioned ranks corresponding to that of corporal.
An organism that is specialized for a particular environment.