Word Study
sallet
CIDE DICTIONARY
sallet, n. [F. salade, Sp. celada, or It. celata, fr. L. (cassis) caelata, fr. caelare, caelatum, to engrave in relief. So called from the figures engraved upon it.].
A light kind of helmet, with or without a visor, introduced during the 15th century. [1913 Webster]
"Then he must have a sallet wherewith his head may be saved." [1913 Webster]
sallet, n.
Salad. Shak. [1913 Webster]
OXFORD DICTIONARY
sallet, n. (also salade) hist. a light helmet with an outward-curving rear part.
Etymology
F salade ult. f. L caelare engrave f. caelum chisel
For further exploring for "sallet" in Webster Dictionary Online