ɐn ˈɑːfɪs ʌv pɹˈɑːfɪt mˈiːnz ɐ pəzˈɪʃən ðæt bɹˈɪŋz tə ðə pˈɜːsən hˈoʊldɪŋ ɪt sˌʌm faɪnˈænʃəl ɡˈeɪn, ɔːɹ ɐdvˈæntɪdʒ, ɔːɹ bˈɛnɪfˌɪt.
An office of profit means a position that brings to the person holding it some financial gain, or advantage, or benefit.