architrave
Synonym discussion
Sense: noun/1
All four terms refer to decorative strips around openings in a building, but they differ in specificity. 'Architrave' is the most precise: it names the border that runs around a door, window, or arch, often carrying period detail. 'Moulding' is a broader category — it includes any shaped strip of wood, plaster, or plastic used for ornament (crown moulding, baseboard, picture rail). 'Trim' is the most general, used in everyday American English for any finish material around windows and doors. 'Casing' (US) or 'door casing' refers specifically to the visible frame around a door. For example: 'The original architrave in the Georgian house had a dentil pattern.' 'He bought flat casing for the bathroom door.' 'The crown moulding is a different kind of trim from the window architrave.'
Common collocations
Etymology
Borrowed from Italian 'architrave', which itself comes from Latin 'trabs' (meaning a beam) combined with the Greek prefix 'archi-' (meaning chief or main). The Italian word originally meant the main beam that spans across columns in a classical building — the modern sense of a decorative door frame developed later. The term entered English in the mid-16th century, first in its classical architectural meaning and later extending to door and window frames.
First known use
1563
1563, in the meaning defined at sense 1