of reckon-the act of one who reckons, counts, or computes; the result of reckoning or counting; calculation.-an account of time-adjustment of claims and accounts; settlement of obligations, liabilities, etc.-the charge or account made by a host at an inn.-esteem; account; estimation.-the calculation of a ship's position, either from astronomical observations, or from the record of the courses steered and distances sailed as shown by compass and log, -- in the latter case called dead reckoning (see under dead); -- also used for dead reckoning in contradistinction to observation.-the position of a ship as determined by calculation.