Meanings

binary star

Futabasaurus suzukii (species of plesiosaur)

both parents

eudicots

hyperbolic geometry

having two poles

ban-sugoroku

ban-sugoroku board (usu. wooden)

double happiness (Chinese ornamental symbol)

repeated initials (in Chinese poetry)

dual

twin pregnancy

twin pregnancy

two-wheeled vehicle

morote gari (judo takedown)

breasts

two arms

breasts

twin paradox (thought experiment)

dipole antenna