1. blue toadflax North American plant having racemes of blue-violet flowers
  2. toadflax common European perennial having showy yellow and orange flowers; a naturalized weed in North America
  3. bastard toadflax woody creeping parasite of western North America having numerous thick powdery leaves and panicles of small dull-white flowers
  4. light reflex reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smaller
  5. blue devils a state of depression
  6. blue flag a common iris of the eastern United States having blue or blue-violet flowers; root formerly used medicinally
  7. blue mold fungus fungus causing a serious disease in tobacco plants characterized by bluish-grey mildew on undersides of leaves
  8. blood fluke flatworms parasitic in the blood vessels of mammals
  9. old-field toadflax North American plant having racemes of blue-violet flowers
  10. pilomotor reflex reflex erection of hairs of the skin in response to cold or emotional stress or skin irritation
  11. blue fox a variety of Arctic fox having a pale grey winter coat
  12. value-added tax a tax levied on the difference between a commodity's price before taxes and its cost of production
  13. Leptotyphlops blind snakes of Asia and Africa and Americas
  14. plantar reflex flexion of the toes when the sole of the foot is stroked firmly on the outer side from the heel to the front in persons over the age of 2 years; under 2 years the results should be extension of the toes (Babinski reflex)
  15. retroflex bent or curved backward
  16. blood dyscrasia any abnormal condition of the blood
  17. blue devil a coarse prickly European weed with spikes of blue flowers
  18. false flax annual and biennial herbs of Mediterranean to central Asia
  19. magnetic flux a measure of the strength of a magnetic field over a given area
  20. patellar reflex a reflex extension of the leg resulting from a sharp tap on the patellar tendon