straightedge

[streyt-ej]

Origin:
1805–15; straight + edge

Dictionary.com Unabridged

straight-edge

[streyt-ej]
adjective
advocating abstinence from alcohol, cigarettes, drugs, and sex and sometimes advocating vegetarianism.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
straightedge (ˈstreɪtˌɛdʒ)
 
n
a stiff strip of wood or metal that has one edge straight and true and is used for ruling and testing straight lines
 
'straightedged
 
adj

straight-edge
 
adj
informal not indulging in any kind of drug-taking or sexual activities

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Example sentences
The minimum length of the straightedge depends on the sample spacing or survey
  interval of the profile data.
The moulding of expansion joints and edges, using edging tools, jointers and
  straightedge.
Measure the distance from the level surface to a reference point on the
  straightedge.
Advance the straightedge along the pavement in successive stages of not more
  than one half the length of the straightedge.
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