Night-cap

You skie-ſtaring Cocks combes you: you fat braines, out upon you; you are good for nothing but to ſweat night-caps, and make rug-gownes deare: […]

1769, Samuel Johnson, cited in James Boswell, The Life of Samuel Johnson, London: Charles Dilly, Volume 1, p. 311, You remember the gentleman in “The Spectator,” who had a commission of lunacy taken out against him for his extreme singularity, such as never wearing a wig, but a night-cap. Now, Sir, abstractedly, the night-cap was best; but, relatively, the advantage was overbalanced by his making the boys run after him.

After a little while the good lady turned out in her petticoat and stays, with a blanket over her shoulders, and a night-cap so beflapped and befrilled as gave the pitiful countenance within it the appearance of being decked out for a funeral.

—Miss Luna, muffling up her head, Went with the ague, straight to bed, Put out her lamp, and bade them tell She could not hear her mistress' bell, Begg'd them with motherwort to dose her, And drew her cloudy night-cap closer.—

Rum Fustian is a "night-cap" made precisely in the same way as the preceding [egg-posset or egg-flip], with the yolks of twelve eggs, a quart of strong home-brewed beer, a bottle of white wine, half-a-pint of gin, a grated nutmeg, the juice from the peel of a lemon, a small quantity of cinnamon, and sugar sufficient to sweeten it.

The glitter of gold, or of diamonds, will but hurt sore eyes instead of curing them; and an aching head will be no more eased by wearing a crown, than a common night-cap.

Thus secured against surprise, he took off his cravat; put on his dressing-gown and slippers, and his night-cap; and sat down before the fire to take his gruel.

if the hearing is affected, Isopathy makes you a night-cap trimmed with the ears of a calf!

As an ordinary drinker, he always used to find it necessary to have a glass of something as a night-cap, and then he always woke up in the morning hot and feverish, and Mondayish.