Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun main_line

1 sense of main line

Sense 1
main line -- (the principal route of a transportation system)
       => path, route, itinerary -- (an established line of travel or access)

Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb main_line

1 sense of mainline

Sense 1
mainline -- (inject into the vein; "She is mainlining heroin")
       => inject -- (take by injection; "inject heroin")