Synonyms:
crisphead_lettuce, iceberg_lettuce, iceberg
Meaning: lettuce with crisp tightly packed light-green leaves in a firm head; "iceberg is still the most popular lettuce"
Synonyms:
iceberg, berg
Meaning: a large mass of ice floating at sea; usually broken off of a polar glacier
Usage examples
A big iceberg sailed past the ship this afternoon.
Life must be dull for a single girl on your iceberg planet.