Noun
the deciding vote cast by the presiding officer to resolve a tie
Source: WordNetcasting-vote
General Washington acknowledged to de Grasse the importance of his role in the victory: "You will have observed that, whatever efforts are made by the land armies, the navy must have the casting vote in the present contest." Source: Internet
The commission was equally divided, and the King gave a casting vote in the Archbishop's favour, though signing also a formal pardon or dispensation. Source: Internet
Traditionally, this casting vote is exercised to allow further debate, if this is possible, or otherwise to avoid a decision being taken without a majority (e.g. voting 'No' to a motion or the third reading of a bill). Source: Internet
When the Dartmoor Standing Committee voted in June 1952 to approve the application, Sayer complained that it had relied on the casting vote of the chairman in the absence of three members who would have voted against. Source: Internet