A visored helmet

A hood-like part of a perianth or corolla.

an organ shaped like a helmet; usually a vaulted and enlarged petal as in Aconitum

Upper lip enclosing the anthers in the paintbrush genus (Castilleja)

The strongly concave or helmet-like upper lip of certain bilabiate corollas.

The hooded portion of the perianth in some irregular or bilabiate flowers.

A galea was a Roman soldier's helmet. Some gladiators, myrmillos, also wore a bronze galea with a face mask and a decoration, often a fish on its crest. The exact form or design of the helmet varied significantly over time, between differing unit types, and also between individual examples - ancient military equipment was not produced in assembly lines, but made by hand, so it is not certain to what degree there was any standardization even under the Roman Empire.