sea stack

== English == === Etymology === From sea +‎ stack (“a heap, pile; large vertical column of rock in the sea”); stack is derived from Middle English stak (“a heap, pile, stack; large vertical column of rock in the sea”) [and other forms], from Old Norse stakkr (“a heap, pile; haystack; barn”) (compare Faroese stakkur (“sea stack”)), from Proto-Germanic *stakkaz (“pile of hay, haystack”), ultimately from Proto-Indo-European *(s)teg- (“beam, pole, stick”). === Pronunciation === (Received Pronunciation) IPA(key): /ˈsiː ˌstæk/ (General American) IPA(key): /ˈsi ˌstæk/ === Noun === sea stack (plural sea stacks) (chiefly UK, geology) A pillar of rock that rises from the ocean, formed by surrounding softer ground eroding away. Synonym: stack ==== Alternative forms ==== sea-stack ==== Translations ==== === References === === Further reading === stack (geology) on Wikipedia.Wikipedia