Definify.com
Webster 1913 Edition
Terra
‖
Ter′ra
,Noun.
 [It. & L. See 
Terrace
.] The earth; earth. 
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
, Noun.
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
.