Henry Yule,
Hobson-Jobson — C
(1903)
“ COIR, s. The fibre of the coco-nut husk, from which rope is made. But properly the word, which is Tam. kayiru, Malayāl. kāyar, from v. kāyāṛu, 'to be twisted,' means 'cord' itself (see the accurate Al-Birūnī below) . The former use among Europeans is very early. And both the fibre and the rope made from it appear to have been exported to Europe in the middle of the 16th century. The word appears in early Arabic writers in the forms ḳānbar and ḳanbār, arising probably from some misreading of the diacritical points (for ḳāiyar, and ḳaiyār) . The Portuguese adopted the word in the form cairo. ”
