- A state; a body politic consisting of a certain
number of men, united, by compact or tacit agreement, under one form of
government and system of laws. - The whole body of people in a state; the public. - Specifically, the form of government established on
the death of Charles I., in 1649, which existed under Oliver Cromwell
and his son Richard, ending with the abdication of the latter in 1659.
Meaning of 'commonwealth' (Princeton's WordNet)
1 . commonwealth
[ n]
Meaning (1): - a politically organized body of people under a single government