名词

1. 冰山 the tip of the iceberg
An iceberg is a large tall mass of ice floating in the sea.

1. lettuce with crisp tightly packed light-green leaves in a firm head

e.g. iceberg is still the most popular lettuce

Synonym: crisphead lettuceiceberg lettuce

2. a large mass of ice floating at sea
usually broken off of a polar glacier

Synonym: berg