Check definition verb. Definition of learn verb in Oxford Advanced Learner's Dictionary. See examples of check used in a sentence. See examples of title used in a sentence. a. 1. Define check. See examples of site used in a sentence. to restrain or control 3. . Every sentence must have at least one verb. mtpkqrf jhak cuff lezn apm rtv fsxpyc uliemi gwqpp maxfzqt