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English definition of “head-on”

head-on

adjective [before noun], adverb     /ˌhed.ˈɒn/ US  /-ˈɑːn/
describes an accident in which the fronts of two vehicles hit each other: The car crossed the road and hit a truck head-on. a head-on collisionAccidents involving vehiclesHitting against objects accidentally and colliding
(Definition of head-on adjectiveadverb from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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