
1) Mexican musical instrument
Found on
https://www.crosswordclues.com/clue/cantaro

The cantaro is a percussion instrument. It is a clay pot that is struck in its outer surface or mouth with a hand, creating different effects. Water can be used to pitch the instrument to a desired sound. In Mexico, particularly in the states of Guerrero and Oaxaca, it is used to accompany chilenas, sones, parabienes, gustos, minuetes, jarabes oax...
Found on
http://en.wikipedia.org/wiki/Cantaro

The cantaro is a measure of weight and capacity used in the past in the Mediterranean countries. In Turkey it was 125 lb, in Egypt 99 lb, in Malta 175 lb and in Spain to measure wine it was about 3.5 gallons.
Found on
http://www.probertencyclopaedia.com/browse/AC.HTM
No exact match found.