The Collaborative International Dictionary of English v.0.48:

Lymphatic \Lym*phat"ic\, a. [L. lymphaticus distracted, frantic:
   cf. F. lymphatique]
   pertaining to, containing, or conveying lymph.
   [1913 Webster]

   2. Madly enthusiastic; frantic. [Obs.] " Lymphatic rapture. "
      --Sir T. Herbert. [See Lymphate.]
      [1913 Webster]

   Lymphatic gland (Anat.), one of the solid glandlike bodies
      connected with the lymphatics or the lacteals; -- called
      also lymphatic ganglion, and conglobate gland.

   Lymphatic temperament (Old Physiol.), a temperament in
      which the lymphatic system seems to predominate, that is,
      a system in which the complexion lacks color and the
      tissues seem to be of loose texture; hence, a temperament
      lacking energy, inactive, indisposed to exertion or
      excitement. See Temperament.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Lymphatic \Lym*phat"ic\, n.
   1. (Anat.) One of the lymphatic or absorbent vessels, which
      carry lymph and discharge it into the veins; lymph duct;
      lymphatic duct.
      [1913 Webster]

   2. A mad enthusiast; a lunatic. [Obs.]
      [1913 Webster]

WordNet (r) 3.0 (2006):

lymphatic
    adj 1: of or relating to or produced by lymph