traveler's check

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun An internationally redeemable draft issued by a major financial services company in various denominations and payable only upon the purchaser's endorsement against the original signature on the draft.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun US A check (draft), requiring a specimen signature and a countersignature; this is usually prepaid and drawn against the bank's own funds, rather than drawn against the signatory's account.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a letter of credit issued by a bank or express company that is payable on presentation to any correspondent of the issuer