Buffering is the pause while more of a stream is fetched. Stuck buffering, endless buffering, the video kept buffering.
The player downloads ahead of what you are watching so that a slow moment in the connection does not stop the picture, and buffering is what you see when it has run out of that stored margin. A larger buffer means fewer pauses and a longer wait to start.
1nounbufferingThe pause while more of a stream is fetched.
“The film kept stopping for buffering because our internet was so slow.”
buffering is a pause.
buffer comes from buff + -er. From buff + -er.
Etymology from Wiktionary, CC BY-SA