Children's, Intermediate and Advanced Online English Dictionary & Thesaurus

Comprehensive
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Multi-word Results
guide dog a specially trained dog used by a blind person as an aid and companion; seeing-eye dog.
guide word one or two words printed at the top of the page in a reference book to help the reader find the right page. In this dictionary, the guide words at the top of each page show what the first and last entries on that page are.
wave guide a piece of hollow metal tubing used for the conduction or directional transmission of microwaves.