a large floating mass of ice detached from a glacier or ice sheet and carried out to sea 冰山
常用词组 the tip of an (或 the) iceberg
the small perceptible part of a much larger situation or problem that remains hidden 冰山一角,巨大隐情(或隐患)中显露出来的一小部分 detected fraud is only the tip of the iceberg. 已查明的欺诈行为只是冰山一角。
语源
late 18th cent.: from Dutch ijsberg, from ijs 'ice' + berg 'hill'