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Webster 1913 Edition

(rĕk′’n-ẽr)

Noun.

One who reckons or computes; also, a book of calculations, tables, etc., to assist in reckoning.

Reckoners

without their host must reckon twice.

Camden.

Noun.

rek'ner. One who reckons or computes.

Reckoners without their host must reckon twice.

reckoner ‎(plural reckoners)