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English definition of “lag”

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lag

verb uk   /læɡ/ (-gg-) us  

lag verb (MOVE SLOWLY)

[I] to move or make progress so slowly that you are behind other people or things: He's lagging behind - I think we'd better wait for him to catch us up. Sales are lagging at the moment.

lag verb (COVER)

[T] to cover something with a thick layer of material in order to stop heat from escaping or to stop water from freezing: to lag pipes

lag verb (PRISON)

[T] Australian English informal to send someone to prison or to arrest someone

lag

noun [C] uk   /læɡ/ us  

lag noun [C] (DELAY)

a delay between two things happening: You have to allow for a time lag between order and delivery.

lag noun [C] (PRISONER)

UK old-fashioned informal a prisoner or a person who has often been a prisoner in the past: an old lag
(Definition of lag from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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