An isthmus is a land bridge bordered on both sides by water that connects two larger bodies of land. A narrow strip of land with sea on either side. (dictionary.com) An Isthmus is a narrow strip of land connecting two larger land areas usually with water on either side. Of note, the Isthmus of Corinth connects the peninsula of Peloponnese with the rest of the Greek peninsula, the Isthmus of Panama connects the continents of North and South America (the Americas), and the Isthmus of Suez in Egypt connects Africa and Asia (or Eurasia).
straight bond. Definition. Bond which will pay back the principal on its maturity date, will pay a specified amount of interest on specific dates, and does not carry a conversion privilege or other special features.
Bonds are debt instruments with fixed terms of repayment and with fixed interest payments made during the life of the bond. Bond interest is paid at regular intervals throughout the life of the bond, but the capital is only repaid, in full, at the end of the loan term specified on the bond.