The Collaborative International Dictionary of English v.0.48:

Catnip \Cat"nip`\, Catmint \Cat"mint`\, n. (Bot.)
   A well-know plant of the genus Nepeta (Nepeta Cataria),
   somewhat like mint, having a string scent, and sometimes used
   in medicine. It is so called because cats have a peculiar
   fondness for it.
   [1913 Webster]

WordNet (r) 3.0 (2006):

catnip
    n 1: hairy aromatic perennial herb having whorls of small white
         purple-spotted flowers in a terminal spike; used in the
         past as a domestic remedy; strongly attractive to cats
         [syn: catmint, catnip, Nepeta cataria]

V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

CATNIP
       Common ArchiTecture for Next generation Internet Protocol (IPNG,
RFC 1707)


The Free On-line Dictionary of Computing (30 December 2018):

Common Architecture for Next Generation Internet Protocol
CATNIP

    (CATNIP, originally Common Architecture
   Technology for Next-generation Internet Protocol)

   A network architecture designed to provide a compressed form
   of the existing network layer protocols and to integrate
   CLNP, IP, and IPX.  It provides for any of the
   transport layer protocols in use, including TP4, CLTP,
   TCP, UDP, IPX, and SPX, to run over any of the network
   layer protocol formats: CLNP, IP (version 4), IPX and CATNIP.

   CATNIP was originally proposed by Robert L. Ullmann of Lotus
   Development Corporation on 1993-12-22.  It was published as
   RFC 1707 in October 1994 but it is not an Internet
   standard of any kind.

   (1996-03-23)