Heydays
noun
noun ·Rare ·Advanced level
Definitions
Noun
- 1 plural of heyday form-of, plural
Example
More examples"In their heydays, the Mount Wilson 60-inch and 100-inch telescopes were the most powerful instruments of their kind."
noun ·Rare ·Advanced level
"In their heydays, the Mount Wilson 60-inch and 100-inch telescopes were the most powerful instruments of their kind."