Definition of "cassolette"
cassolette
noun
countable and uncountable, plural cassolettes
(countable) A box or vase with a perforated cover to emit perfumes.
Quotations
Far aloft, over the Altar of the Fatherland, on their tall crane standards of iron, swing pensile our antique Cassolettes or Pans of Incense; dispensing sweet incense-fumes[.]
1837, Thomas Carlyle, The French Revolution: A History […], volumes (please specify |volume=I to III), London: Chapman and Hall, (please specify the book or page number)
Quotations
I'm still bemused by the original "cassolette", which turns out to be "the natural perfume of a clean woman: her greatest natural asset after her beauty", and definitely not to be confused with a small hotpot.
2008, Tamsin Kelly, “The Joy of Sex: Will this sex makeover hit the spot?”, in The Telegraph