
1) Covering material 2) Fiberglass 3) Man-made material
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https://www.crosswordclues.com/clue/fibreglass

1) Fiberglass
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https://www.crosswordclues.com/clue/fibreglass

fibrous form of glass that is used principally as insulation and as a reinforcing agent in plastics.[13 related articles]
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http://www.britannica.com/eb/a-z/f/21

Fibreglass is a woven cloth consisting of very fine threads of glass. When saturated with a resin, the cloth hardens and solidifies. It can be used to reinforce plastic products, or as insulation when in its flexible state.
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http://www.designbuild-network.com/glossary/fibreglass.html

Glass in a fibrous form used in making the body of bathtubs.
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http://www.encyclo.co.uk/local/20844

A material made by impregnating a mat of spun glass (glass fibre) with some kind of resin. It has been used as a material for gutters, and as a lightweight substitute for metal structures. It is prone to attack by the ultraviolet rays in sunlight. Lexan is a translucent fibreglass sheet sometimes used to protect windows suffering from considerable ...
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http://www.encyclo.co.uk/local/20938

material used to make rods. Glass makes the rod less sensitive and more flexible, and reduces the chance of pulling a bait from a fish's mouth
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http://www.fish-uk.com/dictionary.htm

A common material for the Substrate of a PCB. A particular advantage of this material is that it's thermal expansion characteristics are close to those of copper tracks. See also FR4.
Found on
http://www.vutrax.co.uk/glossary.htm

Glass that has been formed into fine fibres, either as long continuous filaments or as a fluffy, short-fibred glass wool. Fibreglass is heat- and fire-resistant and a good electrical insulator. It has applications in the field of fibre optics and as a strengthener for plastics in GRP (glass-reinforced plastics). The long filament fo...
Found on
https://www.encyclo.co.uk/local/21221
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