This is how many views your video got from people clicking on your video from the "Suggested Videos" section of YouTube. (The right side of the screen, or the bottom of the screen on mobile, while watching another video)

This is a good stat to dig into - gives you some insight into how the YouTube algorithm is judging your video. You'll often ask the question of "what audience is my video getting pushed to?". This helps get some insight into that.

You can get suggested views from your own videos! If your videos are similar in topic, after a viewer watches one of your videos, YouTube might suggest another one of your videos.

If a large youtuber makes a video on a similar topic, you might see a spike in views from suggested.