Inter: term » kai||sea|lang=haw + Inter: term » nalu||wave|lang=haw = "billowy sea".
Proper noun
Inter: haw-proper nou » n
Inter: given name » male|lang=haw.
References
* Hawaii State Archives: Marriage records Kainalu occurs in 19th century marriage records as the only name (mononym) of 2 women and 3 men.
Social Security Administration: Popular Baby Names by State: included in the top hundred first names for boys born in the State of Hawaii during 1996-1997 and 1999-2008.