line feed

Short definition from Wiktionary

Noun

1. 1
   On a typewriter, the action of the carriage roller to push the page up one or more lines, often simultaneously with executing a carriage return.
2. 2
   The character (0x0a in ASCII) which advances the paper by one line in a teletype or printer, or moves the cursor to the next line on a display.
3. 3
   A signal that contains the content about to be broadcast on radio or television.

Verb

1. 1
   To advance the page one line at a time, particularly in rapid succession.