The Collaborative International Dictionary of English v.0.48:

Gambier \Gam"bier\, n. [Malayan.]
   (a) The inspissated juice of a plant (Uncaria Gambir)
       growing in Malacca. It is a powerful astringent, and,
       under the name of Terra Japonica, is used for chewing
       with the Areca nut, and is exported for tanning and
       dyeing.
   (b) Catechu. [Written also gambeer and gambir.]
       [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Terra \Ter"ra\, n. [It. & L. See Terrace.]
   The earth; earth.
   [1913 Webster]

   Terra alba [L., white earth] (Com.), a white amorphous
      earthy substance consisting of burnt gypsum, aluminium
      silicate (kaolin), or some similar ingredient, as
      magnesia. It is sometimes used to adulterate certain
      foods, spices, candies, paints, etc.

   Terra cotta. [It., fr. terra earth + cotta, fem. of cotto
      cooked, L. coctus, p. p. of coquere to cook. See Cook,
      n.] Baked clay; a kind of hard pottery used for statues,
      architectural decorations, figures, vases, and the like.


   Terrae filius [L., son of the earth], formerly, one
      appointed to write a satirical Latin poem at the public
      acts in the University of Oxford; -- not unlike the
      prevaricator at Cambridge, England.

   Terra firma [L.], firm or solid earth, as opposed to
      water.

   Terra Japonica. [NL.] Same as Gambier. It was formerly
      supposed to be a kind of earth from Japan.

   Terra Lemnia [L., Lemnian earth], Lemnian earth. See under
      Lemnian.

   Terra ponderosa [L., ponderous earth] (Min.), barite, or
      heavy spar.

   Terra di Sienna. See Sienna.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Catechu \Cat"e*chu\, n. [See Cashoo.] (Chem.)
   A dry, brown, astringent extract, obtained by decoction and
   evaporation from the Acacia catechu, and several other
   plants growing in India. It contains a large portion of
   tannin or tannic acid, and is used in medicine and in the
   arts. It is also known by the names terra japonica,
   cutch, gambier, etc. --Ure. --Dunglison.
   [1913 Webster]