sundial

English Thesaurus

1. timepiece that indicates the daylight hours by the shadow that the gnomon casts on a calibrated dial (noun.artifact)

hypernym	:	horologe, timekeeper, timepiece,
definition	:	a measuring instrument or device for keeping time (noun.artifact)

part holonym	:	gnomon,
definition	:	indicator provided by the stationary arm whose shadow indicates the time on the sundial (noun.artifact)