From Longman Dictionary of Contemporary Englishsunblocksun‧block /ˈsʌnblɒk $ -blɑːk/ noun [countable, uncountable] DCBcream or oil that you rub into your skin, in order to completely stop the sun’s light from burning you → sunscreen
Examples from the Corpus
sunblock• Some sufferers find a sunblock cream may help.• Prevent damage by always using a sunblock.• We didn't escape entirely however - Grand Canyon animals are not fussy and they were happy to eat my sunblock cream.• Don't expose babies under six months to strong sunlight at all; after that they should wear a strong water-resistant sunblock.• Is there a total sunblock which prevents tanning altogether?• If you don't want to get any darker, use a total sunblock.• I never went out without my insect repellent and waterproof sunblock.• They point at their shoulders and hands, shellacked with sunblock. 