shellback

noun
shell·​back | \ ˈshel-ˌbak How to pronounce shellback (audio) \

Definition of shellback

1 : an old or veteran sailor
2 : a person who has crossed the equator and been initiated in the traditional ceremony

First Known Use of shellback

1853, in the meaning defined at sense 1

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The first known use of shellback was in 1853

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of or relating to the heavens

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