Almost never appears alone in modern Chinese — it lives inside compounds and proper names:
东瀛 (Dōngyíng, 'Eastern Sea' = literary name for Japan),
瀛海 (yínghǎi, the great ocean), and the legendary immortal isle
瀛洲 (Yíngzhōu) said to lie in the East Sea. Common in poems, classical prose, and the personal names of writers and politicians.