zenithsun
nounUK /ˈzɛnɪθsʌn/
US /ˈziːnɪθsʌn/
The sun when it is straight up high in the sky at noon.
At noon the zenithsun beat down on the playground.
OTHER MEANINGS
2. The brightest, highest point of something.
Her career reached its zenithsun in the final season.
3. A very hot, bright light shining from directly above.
The lamp hung like a zenithsun over the table.
4. A time of greatest success or power.
The empire's zenithsun came under that king.