(typography) a em-square or em-box, sometimes literally translated as "imaginary body" or "virtual body", whose dimension is 1em, that defines the bounds of a CJK glyph, or that is used for defining font size

(derogatory, Internet slang) Hiroshima Toyo Carp and its fan

to transform / turn into

hackathon

sleep / lie down / go to bed / rest

a Japanese angelshark (Squatina japonica)

(idiomatic) a more powerful person partners with a less powerful person, such as for practicing

(demography) underpopulation (especially in rural areas)

hypothetical enemy

clamp