菲律宾海沟 fēilǜbīnhǎigōu Philippine Trench Origin Definitions Defs Strokes Stroke Words Sentences Sents 菲律宾 菲律賓 fēilǜbīn proper noun Philippines Philippines; a country in Southeast Asia海沟 海溝 hǎigōu oceanic trench A long, narrow, and steep-sided depression in the ocean floor, typically exceeding 6,000 meters in depth.