ἀμμοδυέτας
From LSJ
γραμματική ἐστιν ἐμπειρία τῶν παρὰ ποιηταῖς τε καὶ συγγραφεῦσιν ὡς ἐπὶ τὸ πολὺ λεγομένων → grammar is a practical knowledge of the usage of poets and writers of prose
Spanish (DGE)
(ἀμμοδῡέτας)
que se esconde en la arena πάγουρος AP 6.196 (Stat.Flacc.).