IPA: /ləˈkjuːnər/
KK: /lɑːˈkjuːnər/
A type of ceiling that has panels set into it, creating a decorative effect.
The architect designed a beautiful lacunar ceiling for the grand hall.
Lacunar → It is formed from "lacuna" (from Latin "lacuna", meaning a gap or hollow) and the suffix "-ar" (meaning pertaining to or relating to). The word "lacunar" refers to something that is related to or characterized by gaps or hollows.
Think of a 'gap' or 'hollow' ('lacuna') to remember that 'lacunar' describes something that has gaps or hollows.