What Type of Linux File Has Permissions That Are Symbolized with a “c”?

Problem scenario
You run this command: sudo ls -lh /dev

You see output like this:

crw-rw---- 1 root tty       7, 131 Dec 23 19:20 vcsa3
crw-rw---- 1 root tty       7, 132 Dec 23 19:20 vcsa4
crw-rw---- 1 root tty       7, 133 Dec 23 19:20 vcsa5
crw-rw---- 1 root tty       7, 134 Dec 23 19:20 vcsa6

You want to know if the "c" is a link to another file or something else. What type of file does the letter "c" designate?

Solution
It is a reference to a character device.

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