[noun][from the early 1500s]soba, soba noodle, a variety of Japanese noodle made from buckwheat
[noun][from 1500s or 1600s] a kind of low, flat, broad tea bowl, originally produced on the Korean peninsula and favored in tea ceremony, so called for the color of the glaze
[noun][from 1811](archaic) a night-time streetwalker (specifically an unlicensedprostitute); from the way that night-time sellers of soba noodles via food carts would walk the streets in search of customers
[noun][from 1867](archaic) sixteen of something (when counting); from the way that a length of 16 文(mon, a traditional Japanese unit of length; 1 mon = approximately 2.4cm) worth of soba noodles would fill a single serving bowl