Ready-reckoner
Full definition of ready-reckoner
Noun
ready-reckoner
(plural ready-reckoners)- 1890, Mary Elizabeth Braddon, The Trail of the Serpent Chapter 4, Besides these things, Mr. Peters found a Johnson's dictionary, a ready-reckoner, and a pair of boot-hooks; but as he found nothing else, Mr. Darley grew quite tired of watching his proceedings, and suggested that they should adjourn; for he remarked—"Is it likely that such a fellow as this North would leave anything behind him?"