hor·o·loge (hôr'ə-lōj', hŏr'-) n. A device, such as a clock or sundial, used in telling time.
[Middle English orloge, from Old French, from Latin hōrologium, from Greek hōrologion : hōrā, hour, season; see yēr- in Indo-European roots + legein, to speak; see leg- in Indo-European roots.]