|a gadget; dingus; thingumbob.|
|a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.|
|1.||a. a person who specializes in or devotes himself to a particular area of activity, field of research, etc|
|b. (as modifier): specialist knowledge|
|2.||an enlisted rank in the US Army denoting technical qualifications that entitle the holder to a noncommissioned officer's pay|
|3.||ecology Compare generalist an organism that has special nutritional requirements and lives in a restricted habitat that provides these|
specialist spe·cial·ist (spěsh'ə-lĭst)
A physician whose practice is limited to a particular branch of medicine or surgery, especially one who is certified by a board of physicians.