Source : WordNet®

run out
     v 1: become used up; be exhausted; "Our supplies finally ran out"
     2: flow off gradually; "The rain water drains into this big
        vat" [syn: {drain}]
     3: leave suddenly and as if in a hurry; "The listeners bolted
        when he discussed his strange ideas"; "When she started to
        tell silly stories, I ran out" [syn: {run off}, {bolt}, {bolt
        out}, {beetle off}]
     4: lose validity; "My passports expired last month" [syn: {expire}]
     5: flow, run or fall out and become lost; "The milk spilled
        across the floor"; "The wine spilled onto the table" [syn:
         {spill}]
     6: exhaust the supply of; "We ran out of time just as the
        discussion was getting interesting"
     7: prove insufficient; "The water supply for the town failed
        after a long drought" [syn: {fail}, {give out}]
     8: use up all one's strength and energy and stop working; "At
        the end of the march, I pooped out" [syn: {poop out}, {peter
        out}, {run down}, {conk out}]