Level 44 - 3 Letters

Here's the 3 letter solution for Level 44 in 4 Pics 1 Word

4 pics 1 Word Level 44 Image 1 4 pics 1 Word Level 44 Image 2 4 pics 1 Word Level 44 Image 3 4 pics 1 Word Level 44 Image 4
M
I
X