the number of overlaps; fold, layer

main, principal, important

(Classical Japanese, archaic) to pile, add layers, stack, heap / (Classical Japanese, archaic) to repeat

heavy; important

weight

(mineralogy) lepidocrocite

one day

one, 1 / the first in order, foremost / the beginning / the best / a kind of; one of something / (card games) an ace / unity / the bottom string of a shamisen or other Japanese musical instrument

a stone / (slang, electronics) a transistor

for grains of rice; one koku is equal to approximately 180 litres / (by extension, historical) for land of famous daimyo or samurai; one koku is also approximately 180 litres