Instrumental-comitative case

/ˌɪnstɹəmˈɛntəlkˈɒmɪtˌeɪtɪv kˈeɪs/

/ˌɪnstɹəmˈɛntəlkˈɑːmᵻtˌeɪɾɪv kˈeɪs/

a grammatical case found in some languages that combines the functions of the instrumental case and the comitative case to express the idea of using an instrument or tool in the company of someone or something else