American Heritage Dictionary
(1)
Century Dictionary
(2)
GNU Webster's 1913
(2)
WordNet
(1)
Elsewhere on the web
Turn down the counterpane, and let the air have free course through the blankets 7.— Searchlights on Health: Light on Dark Corners A Complete Sexual Science and a Guide to Purity and Physical Manhood, Advice To Maiden, Wife, And Mother, Love, Courtship, And Marriage
Snug under his counterpane, the practical joker awaited, chuckling, a choleric word from the impassive and impeccable butler.— The Hill A Romance of Friendship

American Heritage Dictionary (1)
Century Dictionary (2)
Bubble size: how much this word was used in a year
Bubble height: used more or less than expected, vs. all uses evenly distributed
You can expect to see this word several times a year.