أَوْ مُشَابِهًا لِلْمُضَافِ، نَحْوَ: «يَا طَالِعًا جَبَلًا!».
Translation: The vocative is also accusative when it is quasi-construct, e.g. “O you who climb a mountain!”.
A quasi-construct vocative is completed by a related complement, without being the first term of a true iḍāfa.