terpri

terpri /ter'pree/ vi.  [from LISP 1.5 (and later,
   MacLISP)] To output a {newline}.  Now rare as jargon, though
   still used as techspeak in Common LISP.  It is a contraction of
   `TERminate PRInt line', named for the fact that, on some early OSes
   and hardware, no characters would be printed until a complete line
   was formed, so this operation terminated the line and emitted the
   output.