n.
1.second part of the Stone Age beginning about 750,00 to 500,000 years BC and lasting until the end of the last ice age about 8,500 years BC
Idiom of the Day
swallow (something) hook, line, and sinker
to believe something completely when someone is trying to deceive you
I swallowed the story hook, line, and sinker about how my friend lost his car keys.