Longman Dictionary of Contemporary English homepage

high-speed

 adjective
     
Related topics: Transport
high-speed [only before noun]
1TT designed to travel or operate very fast:
a high-speed train
high-speed computer/network/modem etc
high-speed Internet access
2

high-speed chase

a situation when the police drive very fast to try to catch someone in a car
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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