thistle(redirected from cotton thistles)
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thistle/this·tle/ (this´l) any of a number of weedy plants of the family Compositae, having spiny leaves and flower heads surrounded by spiny bracts.
blessed thistle the thistlelike herb Cnicus benedictus, or its dried flowers, leaves, and upper stems; used for dyspepsia and loss of appetite; used also in folk medicine for fever and colds and as a diuretic.
milk thistle the thistle, Silybum marianum, or its dried ripe fruit; used for loss of appetite and for supportive treatment in gallbladder and liver disorders.
A perennial plant, the root of which is antiemetic and antidiarrhoeal; it is used for gastrointestinal complaints (anorexia, bloating, diarrhoea, gastroenteritis, nausea and vomiting), abdominal and chest pain, diaphoresis, oedema, fatigue, and joint, muscle and pregnancy-related pain.
any of a large number of plants in the family Asteraceae. Some poisonous ones are variegated thistle (Silybum marianum), yellow star thistle (Centaurea solstitialis).