Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

  

beam

 
/bim/ n [C] (LIGHT)

Definition

a line of light coming from the sun or a bright light, esp. as seen against a darker background: a beam of sunlight A laser beam scans the disc’s surface.
(Definition of beam n (LIGHT) from the Cambridge Academic Content Dictionary © Cambridge University Press)

“beam” in other dictionaries

Word of the Day

throw caution to the wind/winds

to do something without worrying about the risk or negative results

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More