iceberg Meaning, Definition & Usage

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

WordNet

Ice"berg` noun
Etymology
Prob. of Scand. origin; cf. Dan. iisbierg, Sw. isberg, properly, a mountain of ice. See Ice, and Berg.
Definitions
  1. A large mass of ice, generally floating in the ocean. ✍ Icebergs are large detached portions of glaciers, which in cold regions often project into the sea.

Webster 1913