MAINLINE

mainline

(verb) inject into the vein; “She is mainlining heroin”

Source: WordNet® 3.1

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Etymology

Adjective

mainline (not comparable)

Normal, principal or standard.

(rail transport) Of or pertaining to the principal route or line of a railway.

(rail transport) Of or pertaining to a surface railway as distinct from an underground, elevated or light rail one.

Synonyms

• (normal, principal or standard): mainstream

Verb

mainline (third-person singular simple present mainlines, present participle mainlining, simple past and past participle mainlined)

To inject (a drug) directly into a vein.

Synonym: main

(computing, transitive) To integrate (code, etc.) into the main repository for a software project, rather than separate forks.

Noun

mainline (plural mainlines)

(aviation) An airline's main operating unit, as opposed to codeshares or regional subsidiaries.

(computing) The main repository for a software project, from which different versions (forks) may be split off.

Source: Wiktionary

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