/meuh dal"yeuhn/ , n.
1. a large medal.
2. anything resembling a medal in form, used as an ornament, in a design, etc.
3. a permit issued by a governmental agency to operate a taxicab, usually represented by a small metal identification disk displayed on the taxi.
4. Archit.
a. a tablet, usually rounded, often bearing objects represented in relief.
b. a member in a decorative design resembling a panel.
5. médaillon.
[ 1650-60; médaillon medaglione, aug. of medaglia MEDAL ]