iceberg

例句：

1. Four days after the Titanic set out, a very big iceberg floated towards her.
   鐵達尼號出發四天以後，一座巨大的冰山向它漂來。
2. The ship was holed by an iceberg.
   冰山把那船撞出了窟窿。
3. Most of the iceberg is under the water.
   冰山的大部分在水面以下。

英文解釋：

名詞 iceberg:

1. a large mass of ice floating at sea; usually broken off of a polar glacier
   同義詞：berg
2. lettuce with crisp tightly packed light-green leaves in a firm head
   同義詞：crisphead lettuce, iceberg lettuce