i Register
In some senses, casket is marked as British, US, poetic. Watch for register when choosing this word.
noun
A little box, e.g. for jewellery.
They will be here at five, take merely the clothes necessary for the journey and her jewel-casket. The Hunt for the Red Casked
An urn.
A coffin.
A gasket.
verb
To put into, or preserve in, a casket.
I have […] casketed my treasure.