'Calculator' definitions:

Definition of 'calculator'

From: WordNet
noun
An expert at calculation (or at operating calculating machines) [syn: calculator, reckoner, figurer, estimator, computer]
noun
A small machine that is used for mathematical calculations [syn: calculator, calculating machine]

Definition of 'Calculator'

From: GCIDE
  • Calculator \Cal"cu*la*tor\, n. [L.: cf. F. calculateur.] One who computes or reckons: one who estimates or considers the force and effect of causes, with a view to form a correct estimate of the effects. [1913 Webster]
  • Ambition is no exact calculator. --Burke. [1913 Webster]