πελέκεσσι
From LSJ
ὁ Σιμωνίδης τὴν μὲν ζωγραφίαν ποίησιν σιωπῶσαν προσαγορεύει, τὴν δὲ ποίησιν ζωγραφίαν λαλοῦσαν → Simonides relates that a picture is a silent poem, and a poem a speaking picture | Simonides, however, calls painting inarticulate poetry and poetry articulate painting
Dutch (Woordenboekgrieks.nl)
πελέκεσ(σ)ι dat. plur. van πέλεκυς.