atrium /äˈ or āˈtri-əm or -ŭm/

1. The entrance hall or chief apartment of an ancient Roman house
2. A church forecourt or vestibule
3. A central courtyard (architecture)
4. A cavity or entrance (zoology and anatomy)
5. Specif either of the two upper cavities of the heart into which blood passes from the veins

aˈtrial adjective

• nail-headed
• nail-heads
• nail-head-spar
• nail-hole
• nail-holes
• nailing
• nailings
• nailless
• nail one's colours to the mast
• nail polish
• nail polishes
• nail punch
• nail punches
• nail-rod
• nail-rods
• nails
• nail scissors
• nail set
• nail up
• nail varnish
• nail varnishes
• nain
• nainsel'
• nainsell
• nainsells