(adj.) Used to describe a person, especially a male, who seems to embody many female characteristics and mannerisms. Is not necessarily derrogative, just descriptive.

(adj.) In a feminine manner

(noun) A title for a straight boy in touch with his feminine side

A semi (partial boner) for a female.

Short for a fucking stupid feminist!

A straight male who has feminine like qualities; can be described as "pretty" instead of "handsome", or can be considered both.

Many can be found in just about every series of Anime/Manga.
Ex: Howl (Howl's Moving Castle), Haku (Spirited Away), Sesshomaru (Inuyasha), etc

Someone who is considered a Femmie might have a womanly like air to them, &/or a delicate bone structure.

steriotypical blonde or other female that has no personality and only does what is socially "cool"