cognate object
noun
1- Grammar a direct object that has the same linguistic derivation as the verb which governs it, as in 'sing a song', 'live a good life'【语法】同根宾语（与支配其本身的及物动词词源相同的直接宾语, 如在sing a song和live a good life中的song和life）。
1.1
- a direct object that makes explicit a semantic concept that is already wholly present in the semantics of the verb which governs it, as in 'ask a question', 'eat some food'同源宾语（其本身含义已由支配它的及物动词点明的直接宾语, 如在ask a question和eat some food中的question和food）。