basilisk: [14] Greek basilískos meant literally ‘little king’ – it was a diminutive of basiléus ‘king’, source also of English basil [15] (probably from the herb’s use by the Greeks in certain royal potions) and of English basilica [16] (a church built originally on the plan of a royal palace). The Greeks used it for a ‘goldcrested wren’, but also for a type of serpent, and it is this latter use which developed into the fabulous monster of classical and medieval times, whose breath and glance could kill. The name was said by Pliny to be based on the fact that the basilisk had a crown-shaped mark on its head. => basil, basilica
