carapace shell cuticle shield a | hard outer covering or case of certain organisms such as arthropods and turtles |
heat shield | a protective covering that protects a spacecraft from overheating on reentry |
nipple shield | a rubber or plastic shield to protect the nipples of nursing women |
shield buckler | armor carried on the arm to intercept blows |
shield | a protective covering or structure |
Star of David Shield of David Magen David Mogen David Solomon's seal | a six-pointed star formed from two equilateral triangles, an emblem symbolizing Judaism |
Laurentian Plateau Laurentian Highlands Canadian Shield | a large plateau that occupies more than % of the land area of Canada, it extends from the Great Lakes northward to the Arctic Ocean |
ozone hole | an area of the ozone layer (near the poles) that is seasonally depleted of ozone |
ozone layer ozonosphere | a layer in the stratosphere (at approximatelymiles) that contains a concentration of ozone sufficient to block most ultraviolet radiation from the sun |
Cabombaceae subfamily Cabombaceae water-shield family | in some classifications considered an independent family of water lilies, comprises the genera Cabomba and Brasenia |
water-shield fanwort Cabomba caroliniana | common aquatic plant of eastern North America having floating and submerged leaves and white yellow-spotted flowers |
water-shield Brasenia schreberi water-target | aquatic plant with floating oval leaves and purple flowers, in lakes and slow-moving streams, suitable for aquariums |
shield fern buckler fern | any of various ferns of the genera Dryopteris or Polystichum or Lastreopsis having somewhat shield-shaped coverings on the sori |
fragrant cliff fern fragrant shield fern fragrant wood fern Dryopteris fragrans | fern or northern Eurasia and North America having fragrant fronds |
Goldie's fern Goldie's shield fern goldie's wood fern Dryopteris goldiana | North American fern with a blackish lustrous stipe |
Braun's holly fern prickly shield fern Polystichum braunii | North American fern whose more or less evergreen leathery fronds are covered with pale brown chafflike scales |
soft shield fern Polystichum setiferum | European shield fern cultivated in many varieties |
ozone sickness | illness that can occur to persons exposed to ozone in high-altitude aircraft, characterized by sleepiness and headache and chest pains and itchiness |
ozone | a colorless gas (O) soluble in alkalis and cold water, a strong oxidizing agent, can be produced by electric discharge in oxygen or by the action of ultraviolet radiation on oxygen in the stratosphere (where it acts as a screen for ultraviolet radiation) |
shield screen | protect, hide, or conceal from danger or harm |
harbor harbour shield | hold back a thought or feeling about, She is harboring a grudge against him |
peltate shield-shaped | (of a leaf shape) round, with the stem attached near the center of the lower surface rather than the margin (as a nasturtium leaf for example) |