the side of a person's field of vision that is not normally observed

दृष्टि का वह भाग जो सामान्यतः नहीं देखा जाता

English Usage: He was hit from the blindside and didn't see it coming.

Hindi Usage: उसे दृष्टि के उस भाग से मारा गया जिसे वह नहीं देख सका।