ipomoea tuberosa

from The Collaborative International Dictionary of English v.0.48
Seven \Sev"en\, a. [OE. seven, seoven, seofen, AS. seofon,
   seofan, seofen; akin to D. zeven, OS., Goth., & OHG. sibun,
   G. sieben, Icel. sjau, sj["o], Sw. sju, Dan. syv, Lith.
   septyni, Russ. seme, W. saith, Gael. seachd, Ir. seacht, L.
   septem, Gr. ???, Skr. saptan. [root]305. Cf. {Hebdomad},
   {Heptagon}, {September}.]
   One more than six; six and one added; as, seven days make one
   week.
   [1913 Webster]

   {Seven sciences}. See the Note under {Science}, n., 4.

   {Seven stars} (Astron.), the Pleiades.

   {Seven wonders of the world}. See under {Wonders}.

   {Seven-year apple} (Bot.), a rubiaceous shrub ({Genipa
      clusiifolia}) growing in the West Indies; also, its edible
      fruit.

   {Seven-year vine} (Bot.), a tropical climbing plant
      ({Ipom[oe]a tuberosa}) related to the morning-glory.
      [1913 Webster]
    
from The Collaborative International Dictionary of English v.0.48
Jalap \Jal"ap\, n. [F., fr. Sp. jalapa; -- so called from
   Jalapa, a town in Mexico, whence it was first obtained.]
   (Med.)
   The tubers of the Mexican plant {Ipom[oe]a purga} (or
   {Exogonium purga}) of the family {Convolvulaceae}, a climber
   much like the morning-glory. The abstract, extract, and
   powder, prepared from the tubers, are well known purgative
   (cathartic) medicines, and are also called jalap. Other
   species of {Ipom[oe]a} yield several inferior kinds of jalap,
   as the {Ipom[oe]a Orizabensis}, and {Ipom[oe]a tuberosa}.
   [1913 Webster]

   {False jalap}, the root of {Mirabilis Jalapa}, four-o'clock,
      or marvel of Peru.
      [1913 Webster]
    

[email protected]