[mass noun]the action of franking a letter or parcel 盖邮戳于(信,包裹)(表示邮资已付或免费投递) [as modifier]a franking machine. 邮资机。 ■[count noun]an official mark or signature on a letter or parcel to indicate that postage has been paid or does not need to be paid 免费投递戳(或签字);邮资已付戳(或签字)