cdr

cdr /ku'dr/ or /kuh'dr/ vt.  [from LISP] To skip past
   the first item from a list of things (generalized from the LISP
   operation on binary tree structures, which returns a list
   consisting of all but the first element of its argument).  In the
   form `cdr down', to trace down a list of elements: "Shall we cdr
   down the agenda?"  Usage: silly.  See also {loop through}.

   Historical note: The instruction format of the IBM 7090 that hosted
   the original LISP implementation featured two 15-bit fields called
   the `address' and `decrement' parts.  The term `cdr' was originally
   `Contents of Decrement part of Register'.  Similarly, `car' stood
   for `Contents of Address part of Register'.

   The cdr and car operations have since become bases for
   formation of compound metaphors in non-LISP contexts.  GLS recalls,
   for example, a programming project in which strings were
   represented as linked lists; the get-character and skip-character
   operations were of course called CHAR and CHDR.