Reckoner - Dictionary Definition and Overview

Reckoner : (noun)
1: an expert at calculation (or at operating calculating machines) [syn: calculator, figurer, estimator, computer]
2: a handbook of tables used to facilitate computation [syn: ready reckoner]

Based on WordNet 2.0

Reckoner : \Reck"on*er\, n. One who reckons or computes; also, a book of calculation, tables, etc., to assist in reckoning.

Reckoners without their host must reckon twice. --Camden.

Based on WordNet (r) 2.0 (August 2003)