An idiom is a phrase that seems to make no sense unless you know the definition. This makes sense, so it is not an idiom. Something caught the gleam of light from a shiny object.
I wouldn't be caught dead in sleeping during the class.
Thieves will be caught.
Stars gleam in the sky Diamonds gleam in the light.
Tagalog Translation of GLEAM: sinag
There was a gleam in his eye.
The Gleam was created on 2006-09-19.
A Gleam Handicap was created in 1941.
Imagine my surprise when I discovered that the gleam in the dirt was actually real gold! That gleam in the clouds is the silver lining.
It means that Tom got on the train at eight o'clock. "Caught" just means he was there on time and made it into his seat.
The Gleam In Your Eyes - The Channels - 1956
The Second Gleam was created on 2008-07-22.
Gleam - album - was created on 1975-03-17.