A tabard is a sleeveless outer garment worn by knights over their armor. It often has a coat of arms on it.
Tabards are old-fashioned and make people think of knights and medieval times.
Examples:
The knight wore a tabard with a red dragon on it.
I saw a picture of a knight in a tabard.
The tabard was very colorful and had a picture of a lion.
I want to wear a tabard and be a knight!
In the story, the brave knight always wore his tabard into battle.
The tabard was so big, it looked like a dress for a giant.