To assert or announce formally, officially, explicitly, or emphatically.
To make outstanding debts, e.g. taxes, payable.
To show one's cards in order to score.
To explicitly establish the existence of (a variable, function, etc.) without necessarily describing its content.
For a constituency in an election to officially announce the result
For the captain of the batting side to announce the innings complete even though all batsmen have not been dismissed.
To inform government customs or taxation officials of goods one is importing or of income, expenses, or other circumstances affecting one's taxes.
Of a person, to stop talking or (of a person or thing) making noise.
To terminate (a business).
To close (a building) so that no one can enter.
To put (someone or something) in a secure enclosed space, such as a room or container.
Stop talking, crying, etc.
I don't believe it!, no way!
Closed up or off, as in a building that no one is to enter.