Reliquary comes from Medieval Latin reliquiarium, from Latin reliquiae ('remains'), from relinquere ('to leave behind'), from re- ('back') + linquere ('to leave'). The historical chain includes Latin reliquiarium, Latin reliquiae, and Latin relinquere. Older glosses in the chain include "remains", "to leave behind", "back", and "to leave", which help explain the semantic range of the modern word. Morphologically, reliquary is best read as compound and borrowing, yielding an English noun shaped by both form history and later usage. In current English it functions as a noun, with the sense "a container or shrine in which sacred relics are kept". related forms include relic, relict, and reliquiae. The result is an English noun whose etymology preserves the older forms while supporting the word's specialized modern meaning.