Definition of queen-post:
(n) :
A female monarch.
(n) :
The wife, consort, or widow of a king.
(n) :
A woman whose pre-eminence, power, or forcefulness is comparable to that of a queen.
(n) :
A woman pre-eminent in a particular group or field.
(n) :
Something regarded as the greatest of its kind or as having pre-eminence or power comparable to that of a queen over a given area.
(n) :
(slang, originally US) An attractive woman; a female partner in a romantic relationship.