four-poster

four-poster (not comparable)

1. (of a bed) Having four vertical columns, one in each corner, that support a tester, so that curtains can be hung to exclude draughts from the sleeper.
   • 1960, P. G. Wodehouse, Jeeves in the Offing, chapter VIII:

     The furnishing of this Blue Room was solid and Victorian, it having been the GHQ of my Uncle Tom's late father, who liked things substantial. There was a four-poster bed, [...]

Used only attributively.

four-poster (plural four-posters)

1. A four-poster bed, which has four high posts, one at each corner, supporting a canopy.