C15 cokbote, perhaps ultimately from Late Latin caudica dug-out canoe, from Latin caudex tree trunk
cockleboat in American English
(ˈkɑkəlˌbout)
noun
cockboat
Word origin
[1615–25; cockle1 + boat]This word is first recorded in the period 1615–25. Other words that entered Englishat around the same time include: berth, scintillation, swamp, synchronize, trigger