noun
large island
Used mainly in place names; not a common standalone noun for a generic large island.
大島という地名は日本各地にある。
The place name Oshima is found in various parts of Japan.
noun
Oshima tsumugi (abbreviation)
Abbreviation of 大島紬, a traditional silk fabric from Amami Oshima. Used in contexts where the full term is understood.
See also: 大島紬
この着物は大島で仕立てたものです。
This kimono is made of Oshima tsumugi.
Full term for the silk fabric; 大島 is the common abbreviation.
From 大 (large) + 島 (island). The fabric sense is an abbreviation of 大島紬, named after Amami Oshima where it is produced.