M4

British

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Also called: PSL1. the amount of money in circulation given by M1 plus most private-sector bank deposits and holdings of money-market instruments

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The M4 relief road, also known as the black route, was a controversial project to build a new motorway across the Gwent levels south of Newport.

From BBC • May 28, 2026

Andrew Lightbown, a priest who said he uses the M4 "very frequently", agreed that "there are traffic jams quite a lot of the time".

From BBC • May 2, 2026

It can be easy to find people in Newport who have opinions about the M4, and have experienced the hold ups on the road.

From BBC • May 2, 2026

Traffic on the M4 often complicates commutes - and the long‑debated relief road continues to cast a shadow over discussions about the city's growth.

From BBC • Apr. 27, 2026

“But,” Dad countered, “that was because you got caught in a contraflow when the new lane was being built. You'll zip along the M4 today. Clean as a whistle. Guarantee it.”

From "Black Swan Green" by David Mitchell

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023