Meanings

Japan National Oil Corporation

Tateishi Electronics (orig. name for OMRON Corporation)

Harry Potter and the Philosopher's Stone (novel, film)

Organization of Arab Petroleum Exporting Countries

Ishikawa Prefectural Nursing University

Ishikawa Prefectural University

Goemon Ishikawa XIII (Lupin III)

Ishikawa Prefectural Police (abbr)

Sekkomon (Japanese chain of Chinese restaurants)

obsidian

stone weight

killing two birds with one stone

one game (of go)

British Petroleum