unblocks >> ʌnˈblɒk
Definition: [verb] remove an obstruction from (something, especially a pipe or drain).
Example: a gadget to unblock sinks quickly
Definition: [verb] restore access to or the use of (email or a website or mobile phone).
Example: crooks are using software to unblock the phones so they can be resold
Definition: [verb] play in such a way that (a long suit) becomes established.
Example: this unblocking play was identified by a Viennese whist player