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lag2

Pronunciation: /lag/
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Definition of lag

verb (lags, lagging, lagged)

[with object]
  • enclose or cover (a boiler, pipes, etc.) with material that provides heat insulation: all pipes and tanks in the attic should be lagged (as adjective lagged)a lagged hot-water tank

Derivatives

lagger

noun

Origin:

late 19th century: from earlier lag 'piece of insulating cover'

lag in other Oxford dictionaries

Definition of lag in the US English dictionary