A gable hood is a fancy covering for a woman's head that was popular in the olden days. It looks like a little house made of fabric that fits onto the top of the head like a hat. It has two parts – the part that covers the head is called the crown, and the part that hangs down the back is called the veil.
Imagine you are playing dress-up and you put on a princess hat – that's kind of what a gable hood looks like. The difference is that a gable hood was usually made out of more expensive fabrics like silk or velvet, and it was worn by fancy ladies like queens or noblewomen.
Why did they wear a gable hood? Well, in those days, women had to cover their hair as a sign of modesty. But they also wanted to look pretty, so they wore fancier coverings like the gable hood. It was kind of like putting a beautiful headband or barrette in your hair today.
So, to sum up, a gable hood is a fancy kind of head covering that women used to wear a long time ago. It looks like a little house on top of their heads and was made out of fancy materials. It was worn to cover the hair as a sign of modesty, but also to look pretty.