In Latin grammar, the ablative case (casus ablativus) is the sixth case of the noun. It expresses instrumental, and locative, similar to those of the English prepositions from; with, by; and in, at. It is sometimes called the adverbial case, since phrases in the ablative can be translated as adverbs. The Romans used the ablative to denote many things like separation, accompaniment, instrument, agent, manner. quality, respect, comparison, material, origin. Moreover, it is used after certain prepositions, and in unique phrases i.e. the ablative absolute. Here we aim to see how Vergil in his Eclogues used the ablative case semanticly, and how he succeeded to express his ideas through this case.