Definition of thimble
			
									- n. - A kind of cap or cover, or sometimes a broad ring, for the
   end of the finger, used in sewing to protect the finger when pushing
   the needle through the material. It is usually made of metal, and has
   upon the outer surface numerous small pits to catch the head of the
   needle.
- n. - Any thimble-shaped appendage or fixure.
- n. - A tubular piece, generally a strut, through which a bolt
   or pin passes.
- n. - A fixed or movable ring, tube, or lining placed in a hole.
- n. - A tubular cone for expanding a flue; -- called ferrule in
   England.
- n. - A ring of thin metal formed with a grooved circumference
   so as to fit within an eye-spice, or the like, and protect it from
   chafing.