iceberg

US /ˈaɪs.bɝːɡ/
UK /ˈaɪs.bɝːɡ/
"iceberg" picture
1.

a large floating mass of ice detached from a glacier or ice sheet and carried out to sea

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The ship narrowly avoided hitting an iceberg.
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Only a small portion of the iceberg is visible above water.
:
floeice floegrowler
2.

a small part of a much larger problem or difficulty

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The financial issues we're seeing are just the tip of the iceberg.
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His bad behavior at school was just the tip of the iceberg of deeper issues at home.
:
tip of the icebergsmall partminor aspect
:
iceberg lettucethe tip of the iceberg