Webster's Revised Unabridged Dictionary · 1913

Excelsior

Excelsior , adjective

[Latin, compar. of excelsus elevated, lofty, past participle of excellere. See Excel, transitive verb]

More lofty; still higher; ever upward.

Excelsior , noun

A kind of stuffing for upholstered furniture, mattresses, etc., in which curled shreds of wood are substituted for curled hair.