In general: the body, e.g. of a human or animal / substance; matter / form; shape / (algebra) field (commutative ring with invertible nonzero elements)

outward appearance; look; aspect

myself, oneself

a photograph of oneself, a photographic self-portrait / (especially) a selfie

to take a photograph of oneself, to take a selfie

(idiomatic) selfishness, self-centeredness

one's own concern or problem

talking about oneself (especially, when the audience is not interested)

soul-searching

Dated spelling of ニューヨーク (“New York”).