Definify.com
Webster 1913 Edition
Postmark
Post′markˊ
,Noun.
The mark, or stamp, of a post office on a letter, giving the place and date of mailing or of arrival.
Post′markˊ
,Verb.
T.
[
imp. & p. p.
Postmarked
; p. pr. & vb. n.
Postmarking
.] To mark with a post-office stamp;
as, to
. postmark
a letter or parcelWebster 1828 Edition
Postmark
POSTMARK
,Noun.