Karaka
Karaka，1 [Etymology unknown．The Sanskrit is also karaka，and the medieval koṣas give as meaning，besides drinking vessel，also a coco-nut shell used as such （with which may be compared Lat．carīna，nutshell，keel of a boat； and Gr．kaρua，nut．） It is scarcely possible that this could have been the original meaning．The coconut was not cultivated，perhaps not even known，in Kosala at the date of the rise of Pali and Buddhism] 1．Water-pot，drinking-vessel （=：pānīya-bhājana PvA．251）．It is one of the seven requisites of a samaṇa Vin．II，302．It is called dhammakaraka there，and at II．118，177．This means “regulation waterpot” as it was provided with a strainer （parissavana） to prevent injury to living things．See also Miln．68； Pv III，224； PvA．185．-- 2．hail （also karakā） J．IV，167； Miln．308； Mhvs XII．9．
--vassa a shower of hail，hail-storm J．IV，167； Miln．308； DhA．I，360．（Page 195）