What does "shut out" mean?
Exclude, deny entry to, block, as in Anyone convicted of a crime is shut out from the legal profession, or These curtains shut out all the light. [Late 1300s]
Prevent an opponent from scoring, as in They were shut out of the last two games, or Reagan shut out Ford in the Texas primary in 1976. Originating in baseball about 1880, this usage was later transferred to other sports and then even broader usage.
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