Definitions for icebergˈaɪs bɜrg

Random House Webster's College Dictionary

ice•bergˈaɪs bɜrg(n.)

a large floating mass of ice detached from a glacier and carried out to sea.
Category: Geography (terms)
an emotionally cold person.
Category: Informal

Idioms for iceberg:

tip of the iceberg,the first hint or revelation of a more complex situation.
Category: Idiom

Origin of iceberg:

1765–75; < D ijsberg

Princeton's WordNet

iceberg, berg(noun)
a large mass of ice floating at sea; usually broken off of a polar glacier
crisphead lettuce, iceberg lettuce, iceberg(noun)
lettuce with crisp tightly packed light-green leaves in a firm head
"iceberg is still the most popular lettuce"

Kernerman English Learner's Dictionary

iceberg(noun)ˈaɪs bɜrg
a large mass of ice floating in the ocean

Wiktionary

iceberg(Noun)
A huge mass of ocean-floating ice which has broken off a glacier or ice shelf
The Titanic hit an iceberg and sank.

Origin: From Eisberg, compound of Eis “ice” + Berg “mountain”. First used to describe a glacier as seen at a distance from a ship then used as a term to describe the floating chunks of ice broken off from such glaciers. Compare ijsberg, isbjerg, / isberg, Welsh eisberg.