corona in Japanese

The circumference of the base of the glans penis in human males.

The luminous plasma atmosphere of the Sun (the solar corona) or other star, extending millions of kilometres into space, most easily seen during a total solar eclipse.

(botany) A ring or set of appendages of adaxial tissue arising from the corolla or the outer edge of the stamens, present in some plants (Narcissus, Passiflora, etc.); a paraperigonium or paracorolla.