magnum opus /magˈnəm ōˈpəs, magˈnŭm opˈŭs/ (Latin)

1. A great work, esp of literature or learning
2. A writer's greatest achievement or the culmination of his or her efforts

• doormat
• doormats
• doormen
• doorn
• doornail
• doornails
• doornboom
• doornbooms
• doorns
• door-plate
• door-plates
• doorpost
• doorposts
• doors
• door-sill
• door-sills
• doors-man
• doorsman
• doors-men
• door-stead
• door-steads
• doorstep
• doorstepped
• doorstepper
• doorsteppers