A doily is according to webster a usually round cloth or paper that has a decorative pattern made of many small holes. Other places said it was usually made in paper, linen or lace and used as a small napkin or decorative mat, but I have seen it used for larger table cloths too in the lacy style of crochet.
The word doily seems to come from an 18th century London draper.
So I might not have made a doily in the original sense of the word, but I have used doily patterns and crochet in a thicker yarn and I do own a few doilies most purchased at flea markets.
Picture taken from Wikipedia
When I think of doilies they are lacy, round, white and crocheted, like this example, but in my head bigger than a napkin which seems to be the original use of a doily, I think now doilies are used more as table clots.
A doily I crocheted in a bit thicker yarn which I gave to my mother for Valentines with two heart coasters.
Here are some of my doilies, the glittery snowflake one is the only one I made, the others are from fleamarkets^^
My mother makes amazing doilies and table cloths using thin crochet thread and mostly a pineapple pattern. They are thin and lazy and in all the colours she can find in thin thread, and she usually finishes them quite fast too. I wish I had a round table so she could make me a few!
Here is a doily pattern I want to make, this one is stiffened to make it into a bowl but I would rather have a doily I think, or perhaps both.