Armor defect, 5 letters
Armor imperfection, 5 letters
Armor trouble, 5 letters
Armor's flaw, 5 letters
Armorial flaw, 5 letters
Bad thing to have in one's armor, 5 letters
Crack in one's armor, 5 letters
Crack in one's armor, e.g., 5 letters
Fissure, 5 letters
Interstice, as in armor, 5 letters
Narrow opening, 5 letters
Not a good thing to have in one's armor, 5 letters
Small fissure, 5 letters
Achilles heel?, 15 letters
Armor problems, 6 letters
Fissures, 6 letters
Flaws in the armor, 6 letters
Weak spots, 6 letters