ὑπαυχένιον

From LSJ

Oἱ δὲ Ἀθηναῖοι ἦσαν ἐν μεγάλῳ κινδύνῳ... (adaptation of Herodotus 6.105) → The Athenians were in great danger...

Source

Russian (Dvoretsky)

ὑπαυχένιον: τό подушечка (для затылка или шеи), думка Luc.