Meaning

• To count; to enumerate; to number; also, to compute; to calculate.

• To count as in a number, rank, or series; to estimate by rank or quality; to place by estimation; to account; to esteem; to repute.

• To charge, attribute, or adjudge to one, as having a certain quality or value.

• To conclude, as by an enumeration and balancing of chances; hence, to think; to suppose; -- followed by an objective clause

  "I reckon he won't try that again."

• To reckon with something or somebody or not, i.e to reckon without something or somebody: to take into account, deal with, consider or not, i.e. to misjudge, ignore, not take into account, not deal with, not consider or fail to consider; e.g. reckon without one's host

• To make an enumeration or computation; to engage in numbering or computing.

• To come to an accounting; to draw up or settle accounts; to examine and strike the balance of debt and credit; to adjust relations of desert or penalty.

Meaning

• The action of calculating or estimating something.

  "By that reckoning, it would take six weeks to go five miles."

• An opinion or judgement.

• A summing up or appraisal.

• The settlement of accounts, as between parties.

• The working out of consequences or retribution for one's actions.

• The bill (UK) or check (US), especially at an inn or tavern.

• Rank or status.