casket

English

Italian jewelry casket, from 1857, made of carved walnut, ebony and lined with red velvet

Probably from Norman cassette. Possibly reformed by analogy with cask[1][2], thus analyzable as cask +‎ -et. Doublet of cassette.

casket (plural caskets)

A little box, e.g. for jewellery.
- 1826, Mary Shelley, The Last Man, part 1, chapter 5
  They will be here at five, take merely the clothes necessary for the journey and her jewel-casket.
  The Hunt for the Red Casked
(Britain) An urn.
(Canada, US) A coffin.
(nautical) A gasket.

little box e.g. for jewelry

Bashkir: шкату́лка f (şkatúlka)
Belarusian: шкату́лка f (škatúlka)
Bulgarian: касетка f (kasetka), ковчеже (bg) n (kovčeže)
Catalan: cofret m, escriny m
Czech: skříňka (cs) f, kazeta (cs) f
Esperanto: skatoleto
Finnish: lipas (fi), rasia (fi)
French: coffret (fr) m
Galician: couselo m, causela f
German: Schatulle (de) f, Kästchen (de) n
Greek: κασετίνα (el) f (kasetína), κουτί (el) n (koutí)
Ancient Greek: κύτος n (kútos)
Hungarian: ékszerdoboz, ládika, ládikó
Italian: scrigno m, cofanetto (it) m
Latin: locellus m
Macedonian: ко́вчеже n (kóvčeže)
Polish: szkatułka (pl) f
Portuguese: porta-joias m
Russian: шкату́лка (ru) f (škatúlka), коро́бочка (ru) f (koróbočka)
Spanish: cofrecito m, joyero (es) m
Swedish: skrin (sv)
Ukrainian: шкату́лка f (škatúlka)

urn

coffin — see coffin

casket (third-person singular simple present caskets, present participle casketing, simple past and past participle casketed)

(poetic, transitive) To put into, or preserve in, a casket.
- c. 1604–1605 (date written), William Shakespeare, “All’s VVell, that Ends VVell”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, OCLC 606515358, [Act II, scene v]:
  I have […] casketed my treasure.