n. (Simp=海沟, Pinyin=hai3 gou1) oceanic trench

[海區] a section of the sea; a marine zone

---

[海口] the entrance to a harbor; the mouth of a harbor; the approach to a bay

---

[海寇] pirates; sea marauders

---

[海溝] a [an ocean] deep; a (sea) trench

---

[海狗] a seal; a sea bear; a sea cat; an eared seal