: of, relating to, or dealing with specific practical details
nuts-and-bolts aspects of the job
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small but essential features, especially those that form an integral framework or make up practical details, as of a plan: »
the busy executive who wants to see the underlying realities, the economic nuts and bolts, that are common to all business enterprises (Sunday Times).
nuts-and-bolts «NUHTS uhn BOHLTS», adjective.
Useful english dictionary. 2012.