From, in, or pertaining to, an old-growth forest; having mature trees or other plants.

Strobilomyces strobilaceus, a boletaceous fungus of Europe and North America.

The written form of Hungarian used from the 10th to the 15th century.

Synonym of Old Slavonic

The oldest form of Indo-Aryan languages, specifically Vedic or classical Sanskrit (ca. 1500–300 BCE)

Of or pertaining to the oldest form of Indo-Aryan languages.

Old Church Slavonic

(soccer) Collectively, the two Scottish football teams Rangers and Celtic, both based in Glasgow, which are the most successful teams in Scotland. They have a fierce and long-standing rivalry.

The written form of Lithuanian used in the 16th and 17th centuries.

Osmanthus heterophyllus, a flowering shrub or tree of the olive family native to East Asia