gutta serena

Gutta \Gut"ta\, n.; pl. {Guttae}. [L.]
   1. A drop.
      [1913 Webster]

   2. (Arch.) One of a series of ornaments, in the form of a
      frustum of a cone, attached to the lower part of the
      triglyphs, and also to the lower faces of the mutules, in
      the Doric order; -- called also {campana}, and {drop}.
      [1913 Webster]

   {Gutta serena} [L., lit. serene or clear drop] (Med.),
      amaurosis.

   {Gutt[ae] band} (Arch.), the listel or band from which the
      gutt[ae] hang.
      [1913 Webster]
    

amaurosis \am`au*ro"sis\ ([a^]m`[add]*r[=o]"s[i^]s), n. [Gr.
   'amay`rosis, fr. 'amayro`s dark, dim.] (Med.)
   A loss or decay of sight as the result of a neurological
   disease, without any perceptible changes in the eye; --
   called also {gutta serena}, the "{drop serene}" of Milton.
   [1913 Webster + AS]

   {Amaurosis fugax} (Med.), Temporary amaurosis
      [AS]