三上

Etymology 1
. Attested from at least the 10th century.

Proper noun

 * 1) Mikami (neighborhoods in Japan):
 * 1) Mikami (neighborhoods in Japan):

Etymology 2
. Attested from at least the 17th century.

Noun

 * 1)  The three most convenient moments for thinking about writing: when riding a horse, when lying in bed, and when in the restroom.