1780: Cot- Word Family Oct 29, 2019

Lots of words stem from 'cot', including 'cottage', 'coterie', 'cote', and 'cot' (as in a barn or hut) which all relate to dwelling, but 'cot' (as in a camp-bed) is not among these. In fact, all of those have other related terms in Indo-European languages like Old Norse and Latin, but 'cot' comes from a Hindu word खाट (khāṭ) meaning 'bedframe'.
See more on word families here.