1shield 
/ˈʃi:ld/ noun
plural shields /ˈʃi:ld/ noun [count] 1 : a large piece of metal, wood, etc., carried by someone (such as a soldier or police officer) for protection 2 : something that defends or protects someone or something
▪ the heat shield on a space shuttle ▪ The thief tried to use a hostage as a human shield. [=the thief hid behind the hostage so the police would not shoot] ▪ Exercise and good nutrition are a shield against disease. [=exercise and good nutrition protect you from disease] — see also windshield 3 US : a police officer's badge 4 : a picture shaped like a soldier's shield that has a coat of arms on it 5 Brit : an award for winning a competition or game
▪ the heat shield on a space shuttle ▪ The thief tried to use a hostage as a human shield. [=the thief hid behind the hostage so the police would not shoot] ▪ Exercise and good nutrition are a shield against disease. [=exercise and good nutrition protect you from disease] — see also windshield
