double sole / double bottom

(swords) an inscription of two characters

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

a Bactrian camel

a dodecagon

a icosagon

twenty-three; 23

twenty-four; 24

twenty-nine; 29