Level 584 - 6 Letters

Here's the 6 letter solution for Level 584 in 4 Pics 1 Word

4 pics 1 Word Level 584 Image 1 4 pics 1 Word Level 584 Image 2 4 pics 1 Word Level 584 Image 3 4 pics 1 Word Level 584 Image 4
P
E
R
I
O
D