OXFORD DICTIONARY
Visor, n. (also vizor)
1 a a movable part of a helmet covering the face. b hist. a mask. c the projecting front part of a cap.
2 a shield (fixed or movable) to protect the eyes from unwanted light, esp. one at the top of a vehicle windscreen.
visored adj. visorless adj.
ME f. AF viser, OF visiere f. vis face f. L visus: see VISAGE
THESAURUS
Visor
bill, camouflage, dark glasses, disguise, domino, eyeshade, eyeshield, false colors, false face, false front, goggles, incognito, mask, masque, masquerade, mummery, peak, protective coloration, shades, smoke screen, smoked glasses, sunglasses, vizard, vizard mask
ROGET THESAURUS
Visor
Ambush
N
ambush, camouflage, mimicry, hiding place, secret place, secret drawer, recess, hold, holes and corners, closet, crypt, adytum, abditory, oubliette, ambush, ambuscade, stalking horse, lurking hole, lurking place, secret path, back stairs, retreat, screen, cover, shade, blinker, veil, curtain, blind, cloak, cloud, mask, visor, vizor, disguise, masquerade dress, domino, pitfall, trap, camouflaged, hidden, concealed, aux aguets.