glossary

glossary: noun:(from m-w.com) a collection of textual glosses or of specialized terms with their meanings.

BUT–what are glosses?

gloss: noun: (from m-w.com, 3rd meaning of the word, definition 1a) a brief explanation (as in the margin or between the lines of a text) of a difficult or obscure word or expression

That means that a glossary is a collection of explanations of difficult words.

Glower

Glower: verb: to look or stare with sullen annoyance or anger

From: “The Metamorphosis” by Franz Kafka: “Gregor!” shouted his sister, glowering at him and shaking her fist. That was the first word she had spoken to him directly since his transformation.”

Now I understand that Gregor’s sister was enraged and gave him a stare out of anger.