iceberg lettuce
US /ˈaɪs.bɜːrɡ ˈlet.ɪs/
UK /ˈaɪs.bɜːrɡ ˈlet.ɪs/

1.
a variety of lettuce with a large, crisp head of pale green leaves, commonly used in salads and sandwiches
:
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She made a fresh salad with iceberg lettuce, tomatoes, and cucumbers.
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For a crunchy texture, add some shredded iceberg lettuce to your tacos.