A Malayan measure used in stating heavy weights, as of cargoes.(noun)
The Century Dictionary (Public Domain)
Use "koyan" in a sentence
" The cate is equivalent to 1.8 English pounds; 87 pounds equal one quintal, 100 catés one pico, and 40 picos one koyan"
"This reader was a member of the priestly family or tribe of Nakatomi, who traced their descent back to Ameno-koyané, one of the principal advisers attached to the sun-goddess's grandchild when he first descended on earth."
"The kulah or bamboo, containing very nearly a gallon, is the general standard of measure among the Rejangs: of these eight hundred make a koyan: the chupah is one quarter of a bamboo."