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Sense: 1
Date: 1900-2000
Origin: specification
Sense: 2
Date: 1800-1900
Origin: speculation
Sense: 3
Date: 1800-1900
Origin: spectacles


spec informal
1 [countable usually plural] a detailed instruction about how a building, car, piece of equipment etc should be made [= specification]:
the specs for the company's new video games console

on spec

if you do something on spec, you do it without being sure that you will get what you are hoping for:
I sent in an application on spec.


[plural] glasses that help you see

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