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English definition of “block”

block

verb [T]     /blɒk/
to decide officially to stop something from happening or continuing: The federal government's fight to block a bankruptcy settlement was rejected by the Supreme Court.block a bid/deal/merger The Federal Trade Commission said it planned to block the merger.
BANKING if a bank blocks someone's account, they make it impossible for that person to remove money from it: Accounts of all suspected terrorists have been blocked.
COMMUNICATIONS to stop emails, text messages, phone calls, etc. from a particular person: The new phone allows users to block messages from particular senders.
(Definition of block verb from the Cambridge Business English Dictionary © Cambridge University Press)
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