double sole / double bottom

double standard

a kind of comedy performance, wherein one person wears a 羽織 (haori) with their arms not in the sleeves and their head and face free and visible as normal, and another person behind slips into the same haori and puts their arms through the sleeves with the back of the haori over their own head, and then, without being able to see, tries to feed the first person

double standard

double-pane window, found especially in Hokkaido and Tōhoku as cold-proofing

a digastric muscle

(grammar) The Classical Japanese bigrade verb conjugation class, consisting of the two subclasses of 上(かみ)二(に)段(だん)活(かつ)用(よう) (kami nidan katsuyō, “upper-bigrade conjugation”) and 下(しも)二(に)段(だん)活(かつ)用(よう) (shimo nidan katsuyō, “lower-bigrade conjugation”)

(Internet) redistribution

2-step authentication

(linguistics) diphthong