1. mainline - Noun
2. mainline - Adjective
3. mainline - Verb
inject into the vein
Source: WordNetShe is mainlining heroin Source: Internet
; Adherents: Held by Christian groups ranging from those who are Biblically inerrant to liberal scholars who mostly belong to mainline Protestant denominations. Source: Internet
A series of 2.5D platformer releases in between the mainline released in between Assassin's Creed UnityAssassin's Creed Syndicate. Source: Internet
Commercial and cargo rail The Union Pacific Railroad (UP) has a mainline passing through Richmond. Source: Internet
All mainline aircraft are now painted in this livery, save for the airframes listed in special liveries below, which include two retro liveries. Source: Internet
British Railways closed the line to mainline passenger trains in 1973, but it re-opened as a heritage line and has run as one ever since. Source: Internet