mustard \mus"tard\, n. of. moustarde, f. moutarde, fr. l.
   mustum must, -- mustard was prepared for use by being mixed
   with must. see must, n.
   1. bot. the name of several cruciferous plants of the genus
      brassica formerly sinapis, as white mustard
      brassica alba, black mustard brassica nigra,
      wild mustard or charlock brassica sinapistrum.
      1913 webster

   note: there are also many herbs of the same family which are
         called mustard, and have more or less of the flavor of
         the true mustard; as, bowyer's mustard lepidium
         ruderale; hedge mustard sisymbrium officinale;
         mithridate mustard thlaspi arvense; tower mustard
         arabis perfoliata; treacle mustard erysimum
         cheiranthoides.
         1913 webster

   2. a powder or a paste made from the seeds of black or white
      mustard, used as a condiment and a rubefacient. taken
      internally it is stimulant and diuretic, and in large
      doses is emetic.
      1913 webster

   mustard oil chem., a substance obtained from mustard, as
      a transparent, volatile and intensely pungent oil. the
      name is also extended to a number of analogous compounds
      produced either naturally or artificially.
      1913 webster
see also:
must brassica sinapis white mustard brassica alba black mustard 
brassica nigra wild mustard charlock brassica sinapistrum lepidium ruderale 
sisymbrium officinale thlaspi arvense arabis perfoliata erysimum cheiranthoides mustard oil 

treacle \trea"cle\ tr=e"k'l, n. oe. triacle a sovereign
   remedy, theriac, of. triacle, f. th'eriaque cf. pr.
   triacla, tiriaca, sp.  it. triaca, teriaca, l. theriaca an
   antidote against the bite of poisonous animals, gr. ?, fr. ?
   of wild or venomous beasts, fr. qhri`on a beast, a wild
   beast, dim. of qh`r a beast. cf. theriac.
   1. old med. a remedy against poison. see theriac, 1.
      1913 webster

            we kill the viper, and make treacle of him. --jer.
                                                  taylor.
      1913 webster

   2. a sovereign remedy; a cure. obs.
      1913 webster

            christ which is to every harm treacle. --chaucer.
      1913 webster

   3. molasses; sometimes, specifically, the molasses which
      drains from the sugar-refining molds, and which is also
      called sugarhouse molasses.
      1913 webster

   note: in the united states molasses is the common name; in
         england, treacle.
         1913 webster

   4. a saccharine fluid, consisting of the inspissated juices
      or decoctions of certain vegetables, as the sap of the
      birch, sycamore, and the like.
      1913 webster

   treacle mustard bot., a name given to several species of
      the cruciferous genus erysimum, especially the erysimum
      cheiranthoides, which was formerly used as an ingredient
      in venice treacle, or theriac.

   treacle water, a compound cordial prepared in different
      ways from a variety of ingredients, as hartshorn, roots of
      various plants, flowers, juices of plants, wines, etc.,
      distilled or digested with venice treacle. it was formerly
      regarded as a medicine of great virtue. --nares.

   venice treacle. old med. same as theriac, 1.
      1913 webster
see also:
theriac sugarhouse molasses treacle mustard erysimum erysimum cheiranthoides treacle water 
venice treacle 

erysimum cheiranthoides
     n : slender yellow-flowered european mustard often troublesome
         as a weed; formerly used as an anthelmintic syn: wormseed
         mustard
see also:
wormseed mustard