nasal irrigation

Noun

 * 1)  A personal hygiene practice which involves flooding the nasal cavity with warm saline solution (salt water).

Synonyms

 * nasal lavage
 * nasal douche

Translations

 * Chinese:
 * Mandarin: 鼻沖洗
 * Czech:
 * Finnish: nenähuuhtelu
 * Japanese: 鼻洗浄
 * Russian: промыва́ние но́са