Something the girls in the example pictures aren't.

From STEM, an abbreviation short for "Science, Technology, Engineering and Mathematics", a STEMlord is a pejorative term for a particular kind of person who has studied in these areas at university or works in these fields who holds a pretentious, condescending attitude to anyone who has studied in any other fields, particularly the Arts and Humanities. They typically believe themselves to be more "intelligent" and "rational", while generally remaining incredibly ignorant outside of their areas of expertise and having the charisma of a rotting pig's backside.

Someone who YOU find attractive. Someone who in your opinion is appealing. This person may not seem "Sexy" to others, but to you they are the definition OF sexy.

People saying that the girls in the example pictures aren't sexy, are not getting what sexy means. To you they may not be sexy, but, to someone they could be the most beautiful, sexy, hott thing EVER.

Supposed to mean sexually attractive, however recently it has become a word of ambiguous meaning that morons use when unable to think of a better adjective for something they like.

The most amazing version of hott.
Usually a stunning girl not only with her body, but the way she acts.

Noun - My Baby Anna, I love you puppy

A person that is pleasing to the eyes and is appealing.

Seriously attractive, some one who oozes sex appeal