sundial
nounUK /ˈsʌn.daɪ.əl/
US /ˈsʌn.daɪ.əl/
A sundial is a tool that tells the time by using the sun to make a shadow.
The old sundial in the garden showed it was almost noon.
OTHER MEANINGS
2. A flat plate or surface marked with hours on which a gnomon casts a shadow.
The stone sundial was carved with Roman numerals.
3. Anything that serves as a means of measuring or indicating time by the sun's position.
Sailors once used a sundial to guess the hour at sea.
4. A decorative garden ornament shaped like a sundial.
She placed a brass sundial among the roses.