The definition of excelsior is shavings of wood used as packing material.(noun)
An example of excelsior is the packing material used to protect fine paintings during shipment.
See excelsior in Webster's New World College Dictionary
Origin: L, compar. of excelsus, lofty, high < pp. of excellere, excel: excelsior < orig. use as trademark
See excelsior in American Heritage Dictionary 4
Origin: Originally a trademark.
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