|an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.|
|an extraordinary or unusual thing, person, or event; an exceptional example or instance.|
cystoscope cys·to·scope (sĭs'tə-skōp')
A tubular instrument equipped with a light and used to examine the interior of the urinary bladder and ureter. Also called lithoscope.