Ancient two-tiered galley, 6 letters
Double-banked galley, 6 letters
Galley type appropriate for this puzzle?, 6 letters
Galley with two banks of oars, 6 letters
Hellenistic-era galley, 6 letters
Sea vessel of Caesar's time, 6 letters
Vessel with two tiers of oars, 6 letters
Galleys with two banks of oars, 7 letters
Phoenician double-deckers, 7 letters
Square cap worn by ecclesiastics, 7 letters
A stiff cap with ridges across the crown, 7 letters
Worn by Roman Catholic clergy, 7 letters
Caps for Roman Catholic clergy, 8 letters
Cardinals' peaked caps, 8 letters
Clergymen's headwear, 8 letters
Ecclesiastical caps, 8 letters
Roman Catholic clergyman's square caps, 8 letters
Splitting a ray into two parallel rays polarized perpendicularly, 13 letters