(historical, UK, military) An allowance formerly made to certain British officers from the money appropriated for army clothing.

plural of ded reckoning

The judgement, in the end times, when one is judged and punished for ones actions

Alternative form of dead reckoning

A method of estimating the position of a ship or aircraft by applying estimates of the distance and direction travelled to a previously known position. In respect to ships/boats, it excludes the effect of wind and current on the vessel. Compare with estimated position. Abbreviation: DR

(idiomatic, uncommon, archaic) A (falsified) bill that is not itemised, and that is unjustifiably high. / (nautical) A false or incorrect reckoning of position.

plural of day of reckoning

simple past tense and past participle of reckon upon

plural of ready reckoner

(historical) A printed book or table containing precalculated values, often multiples of given amounts. / A computer program which calculates values; an online calculator.