catamaran

n. 双体船, 筏

cat.a.ma.ran

n.Nautical （名词）【航海】
A boat with two parallel hulls or floats, especially a light sailboat with a mast mounted on a transverse frame joining the hulls.
双体船：有两个平行的船壳或浮体的小船，尤指桅杆竖在连体船壳的一个横向支架上面的轻型帆船
A raft of logs or floats lashed together and propelled by paddles or sails.
捆扎筏：由圆木或浮体捆扎起来的用桨或帆推动的筏子

来源：
Tamil kaúúumaram
泰米尔语 kaúúumaram
kaúúu [to tie]
kaúúu [捆]
maram [tree, log]
maram [树木，圆木]