Definition of achillean:
(adj) :
Resembling or relating to Achilles, the hero of the Iliad.
(adj) :
Invincible with only one small weakness (an Achilles heel), which becomes one's downfall.
(adj) :
Of or relating to sexual or romantic intimacy between men, supposedly in the style of Achilles' relationship with Patroclus.
(adj) :
Pertaining to the Achilles tendon.
(adj) :
Guided by emotional motives, especially rage, rather than reason.
(adj) :
Of or relating to Achilles Tatius, a Roman-era Greek writer.