Noun
masu
A plant, Hedysarum alpinum, whose edible root is consumed by the Inuit of Alaska.
masu (plural masu)
A square wooden box, originally used to measure rice in Japan during the feudal period.
masu (plural masu)
masu salmon (Oncorhynchus masou)
Another form, でございます de gozaimasu, which is the more formal version of de arimasu, in the etymological sense a conjugation of でござる de gozaru and an honorific suffix -ます -masu, is also used in some situations and is very polite. Source: Internet
The masu holds exactly 180 ml, so the sake is served by filling the masu to the brim; this is done for chilled or room temperature sake. Source: Internet
Serving sake main Sake can be served in a wide variety of cups; here is a sakazuki (a flat, saucer-like cup), an ochoko (a small, cylindrical cup), and a masu (a wooden, box-like cup). Source: Internet
In some Japanese restaurants, as a show of generosity, the server may put a glass inside the masu or put the masu on a saucer and pour until sake overflows and fills both containers. Source: Internet