Minor fair use excerpts from dictionaries such as a definition/translation or two are permitted. Quotes and translations of texts up to 4 sentences are permitted. Links to content elsewhere are acceptable and appropriate, provided such links meet the requirements stated elsewhere in these rules. Always acknowledge the source. — From the WR Rules
Since Tanaka corpus is incorporated into online dictionaries, a link to one of them is desirable to acknowledge the source.
Flaminius, JP modo