freeze-frame

Short definition from Wiktionary

Verb

1. 1
   To show a video in slow motion using freeze frames
2. 2
   To acquire a still image from (video footage).
3. 3
   Alternative spelling of freeze-frame.

Noun

1. 1
   Alternative spelling of freeze frame.
2. 2
   A single still frame or picture taken from a film (movie), or from a video stream.