the eye unaided by any optical instrument that alters the power of vision or alters the apparent size or distance of objects; "it is not safe to look directly at the sun with the naked eye"
providing protective supervision; watching over or safeguarding; "daycare that is educational and not just custodial"; "a guardian angel"; "tutelary gods"
amazingly impressive; suggestive of the flashing of lightning; "the skater's dazzling virtuosic leaps"; "these great best canvases still look as astonishing and as invitingly new as they did...when...his fulgurant popularity was in full growth"- Janet Flanner; "adventures related...in a style both vivid and fulgurous"- Idwal Jones