Meaning of the word reckoner in English

What does reckoner mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

reckoner

US /ˈrɛkənər/
UK /ˈrɛkənə/

Noun

a person who calculates or estimates something

Example:
He's a good reckoner when it comes to predicting market trends.
The old sailor was a skilled reckoner of distances by sight.