Noun

• S: (n) ration (the food allowance for one day (especially for service personnel)) "the rations should be nutritionally balanced"
• S: (n) ration (a fixed portion that is allotted (especially in times of scarcity))

Verb

• S: (v) ration (restrict the consumption of a relatively scarce commodity, as during war) "Bread was rationed during the siege of the city"
• S: (v) ration, ration out (distribute in rations, as in the army) "Cigarettes are rationed"