στροβιλοειδής
From LSJ
οὕτως ἐξ ἐχθρῶν αὐτοκτόνα πέμπετο δῶρα, ἐν χάριτος προφάσει μοῖραν ἔχοντα μόρου → thus mutual gifts that bring death were bestowed by enemies, gifts that brought the lot of death in the name of a favor
English (LSJ)
ές,
A like a στρόβιλος, conical, σχῆμα Thphr.HP3.12.9, cf. Ruf.Anat.32; ὕψος Str.17.1.10. Adv. -δῶς Ruf.Oss.21.