Building our vocabulary, part 2

The following definitions are not from Webster’s or the OED:

LAX Security, prop. n., the guards at the Los Angeles Airport.

Semicolonoscopy, n. an invasive exploration of the rules of punctuation.

Thesaurus, n. the only creature to survive the mass extinction of the dinosaurs 65 million years ago.

Eyesaur, n. the least visually appealing of the dinosaurs.