nuts and bolts

== English == === Alternative forms === nuts-and-bolts (attributive use) === Pronunciation === === Noun === nuts and bolts pl (plural only) (idiomatic) The basic inner workings of something; the fundamentals; that which makes something operate. ==== Synonyms ==== (basic or fundamental workings): brass tacks, nitty-gritty; See also Thesaurus:gist ==== Translations ==== ==== See also ==== low-level (adjective)