Longman Dictionary of Contemporary English homepage

mainline

2 verb
     
NEW! See related topics: DRUG CULTURE
mainline2 [intransitive and transitive] informal
MDD to inject an illegal drug directly into your blood:
He was mainlining heroin.
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.
 
Dictionary pictures of the day
Do you know what each of these is called?
What is the word for picture 1? What is the word for picture 2? What is the word for picture 3? What is the word for picture 4?
Click on any of the pictures above to find out what it is called.

Explore our topic dictionary

ADVERTISING AND MARKETINGANIMALSBANKING
BIOLOGYBUSINESS BASICSCOMPUTERS
CLOTHESDAILY LIFEEDUCATION
FINANCEFOODGRAMMAR
HAIR AND BEAUTYHUMANLAW
MUSICNATURESPORT
STOCKS AND SHARESTECHNOLOGYTRADE