Found 2 items, similar to sow thistle.
English → English (WordNet) Definition: sow thistle sow thistle n : any of several Old World coarse prickly-leaved shrubs and subshrubs having milky juice and yellow flowers; widely naturalized; often noxious weeds in cultivated soil [syn: milk thistle]
English → English (gcide) Definition: Sow thistle Sow \Sow\, n. [OE. sowe, suwe, AS. sugu, akin to s[=u], D. zog, zeug, OHG. s[=u], G. sau, Icel. s[=y]r, Dan. so, Sw. sugga, so, L. sus. Gr. "y^s, sy^s, Zend. hu boar; probably from the root seen in Skr. s[=u] to beget, to bear; the animal being named in allusion to its fecundity. [root]294. Cf. Hyena, Soil to stain, Son, Swine.] 1. (Zo["o]l.) The female of swine, or of the hog kind. [1913 Webster] 2. (Zo["o]l.) A sow bug. [1913 Webster] 3. (Metal.) (a) A channel or runner which receives the rows of molds in the pig bed. (b) The bar of metal which remains in such a runner. (c) A mass of solidified metal in a furnace hearth; a salamander. [1913 Webster] 4. (Mil.) A kind of covered shed, formerly used by besiegers in filling up and passing the ditch of a besieged place, sapping and mining the wall, or the like. --Craig. [1913 Webster] Sow bread. (Bot.) See Cyclamen. Sow bug, or Sowbug (Zo["o]l.), any one of numerous species of terrestrial Isopoda belonging to Oniscus, Porcellio, and allied genera of the family Oniscid[ae]. They feed chiefly on decaying vegetable substances. Sow thistle [AS. sugepistel] (Bot.), a composite plant (Sonchus oleraceus) said to be eaten by swine and some other animals. [1913 Webster] Thistle \This"tle\, n. [OE. thistil, AS. [thorn]istel; akin to D. & G. distel, OHG. distila, distil, Icel. [thorn]istill, Sw. tistel, Dan. tidsel; of uncertain origin.] (Bot.) Any one of several prickly composite plants, especially those of the genera Cnicus, Craduus, and Onopordon. The name is often also applied to other prickly plants. [1913 Webster] Blessed thistle, Carduus benedictus, so named because it was formerly considered an antidote to the bite of venomous creatures. Bull thistle, Cnicus lanceolatus, the common large thistle of neglected pastures. Canada thistle, Cnicus arvensis, a native of Europe, but introduced into the United States from Canada. Cotton thistle, Onopordon Acanthium. Fuller's thistle, the teasel. Globe thistle, Melon thistle, etc. See under Globe, Melon, etc. Pine thistle, Atractylis gummifera, a native of the Mediterranean region. A vicid gum resin flows from the involucre. Scotch thistle, either the cotton thistle, or the musk thistle, or the spear thistle; -- all used national emblems of Scotland. Sow thistle, Sonchus oleraceus. Spear thistle. Same as Bull thistle. Star thistle, a species of Centaurea. See Centaurea. Torch thistle, a candelabra-shaped plant of the genus Cereus. See Cereus. Yellow thistle, Cincus horridulus. [1913 Webster] Thistle bird (Zo["o]l.), the American goldfinch, or yellow-bird (Spinus tristis); -- so called on account of its feeding on the seeds of thistles. See Illust. under Goldfinch. Thistle butterfly (Zo["o]l.), a handsomely colored American butterfly (Vanessa cardui) whose larva feeds upon thistles; -- called also painted lady. Thistle cock (Zo["o]l.), the corn bunting (Emberiza militaria ). [Prov. Eng.] Thistle crown, a gold coin of England of the reign of James I., worth four shillings. Thistle finch (Zo["o]l.), the goldfinch; -- so called from its fondness for thistle seeds. [Prov. Eng.] Thistle funnel, a funnel having a bulging body and flaring mouth. [1913 Webster]