英语词源字典 - 在线词源网站

catamaran [catamaran 词源字典]: catamaran: [17] Catamaran is a word borrowed from the Tamil language of the southeast coast of India. It is a compound meaning literally ‘tied wood’, made up of kattu ‘tie’ and maram ‘wood, tree’. It was first recorded in English in William Dampier’s Voyages 1697: ‘The smaller sort of Bark-logs are more governable than the others … This sort of Floats are used in many places both in the East and West Indies. On the Coast of Coromandel … they call them Catamarans’.
[catamaran etymology, catamaran origin, 英语词源]
catamaran (n.): East Indies log raft, 1670s, from Tamil kattu-maram "tied wood," from kattu "tie, binding" + maram "wood, tree."
tamarack (n.): also tamarac, North American black larch, 1805, probably of Algonquian origin (compare synonymous hackmatack, 1792, from a source akin to Abenaki akemantak "a kind of supple wood used for making snowshoes"), but the etymology is unclear.