highway patrol
noun
a state law-enforcement organization whose officers safeguard the highways.
a law-enforcement officer or group of officers assigned to patrol a highway.
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Inter- vs Intra-What’s the difference between the interstate highway and the intrastate highway? Inter- is a prefix that means between two groups, and intra- is a prefix which means within or inside one group. Inter- and intra- are both prefixes, which are groups of letters that are placed at the beginning of a word in order to change its meaning. Inter- Inter- is a common prefix that …
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Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019