noun
EXAMPLES FROM CORPUS
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Coins Any uncrossed postal order which does not state to whom it is to be paid.
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If you paid by postal order , take the counterfoils to the post office for a refund.
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Please return it at once, or when sending the postal order .
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Send the coupon, and cheque or postal order if applicable to,.
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You should print your name and address on the back of the cheque or postal order .