| iceberg | (noun) lettuce with crisp tightly packed light-green leaves in a firm head | Synonyms: crisphead lettuce, iceberg lettuce |
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| (noun) a large mass of ice floating at sea; usually broken off of a polar glacier | Synonyms: berg |
| iceboat | (noun) a ship with a reinforced bow to break up ice and keep channels open for navigation | Synonyms: icebreaker |
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| (noun) a sailing vessel with runners and a cross-shaped frame; suitable for traveling over ice | Synonyms: ice yacht, scooter |
| icebound | (adjective) locked in by ice | - |
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| icebox | (noun) white goods in which food can be stored at low temperatures | Synonyms: refrigerator |
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| icebreaker | (noun) a beginning that relaxes a tense or formal atmosphere | - |
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| (noun) a ship with a reinforced bow to break up ice and keep channels open for navigation | Synonyms: iceboat |