Definition of sunblock noun from the Oxford Advanced Learner's Dictionary

 

sunblock

 noun
noun
BrE BrE//ˈsʌnblɒk//
 
; NAmE NAmE//ˈsʌnblɑːk//
 
[uncountable, countable]
 
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a cream that you put on your skin to protect it completely from the harmful effects of the sun
See the Oxford Advanced American Dictionary entry: sunblock