from The Century Dictionary.
- noun A very soft flannel made in narrow pieces, used for wearing-apparel.
- noun A cotton fabric woven and finished in imitation of wool flannel.
Sorry, no etymologies found.
I've been thinking about that, all afternoon as I ironed his waists and his blue flannellet pajamas with frogs on like his dad's.
Well, we had exactly the daughter of their dreams, only, as they came without giving us notice, she was dressed in a flannellet nightgown, and her face was dirty.