machines, especially vehicles or computers

profound, deep, stately, solid

profundity, depth, stateliness, solidity

Short for 重工業 (jūkōgyō, “heavy industry”).

muzzle (open end of a gun)

moschiferous animal (musk deer, civet, etc)

a sex position in which both partners' legs are interlocked

to associate / date, go out with

a woman married to a husband after that man's former wife divorced or was deceased

an iris (part of the eye)