Meaning

noun one of the large alphabetic characters used as the first letter in writing or printing proper names and sometimes for emphasis

adjective relating to capital letters which were kept in the top half of a compositor's type case

originEtymology tree Proto-Indo-European *upó Proto-Germanic *ub Proto-Germanic *upp Proto-West Germanic *upp Old English upp Middle English up Proto-Indo-European *-yōs Proto-Germanic *-izô Proto-West Germanic *-iʀō Proto-Germanic *-ōzô Proto-West Germanic *-ōʀō Old English -ra Middle English -er Middle English upper English upper English case English uppercase From upper + case.

Etymology from Wiktionary, CC BY-SA 3.0