Iron deficiency anemia  causing blue skin under the eyes. If there is a shortage of iron in the body, oxygen cannot be properly transported by the blood. Hemoglobin is the oxygen transporting component in the blood, moving oxygen from the lungs to the cells where it is released for normal cell metabolism.
ramrod straight [person] meaning, ramrod straight [person] definition | English Cobuild dictionary. ramrod. 1 n-count A ramrod is a long, thin rod which can be used for pushing something into a narrow tube. Ramrods were used, for example, for forcing an explosive substance down the barrel of an old-fashioned gun, or for cleaning the barrel of a gun.
RAM - Random Access Memory, or just memory. RAM is the working scratchpad memory the computer uses to store code and data that are being actively used. RAM is effectively a storage area of bytes under the control of the CPU. RAM is relatively fast, able to retrieve the value of any particular byte in a few nanoseconds (1 nanosecond is 1 billionth of a second).