Source : Webster's Revised Unabridged Dictionary (1913)

Mediocre \Me"di*o`cre\, a. [F. m['e]diocre, L. mediocris, fr.
   medius middle. See {Mid}.]
   Of a middle quality; of but a moderate or low degree of
   excellence; indifferent; ordinary. `` A very mediocre poet.''
   --Pope.

Mediocre \Me"di*o`cre\, n.
   1. A mediocre person. [R.]

   2. A young monk who was excused from performing a portion of
      a monk's duties. --Shipley.

Source : WordNet®

mediocre
     adj 1: moderate to inferior in quality; "they improved the quality
            from mediocre to above average"; "he would make a poor
            spy" [syn: {poor}, {second-rate}]
     2: of no exceptional quality or ability; "a novel of average
        merit"; "only a fair performance of the sonata"; "in fair
        health"; "the caliber of the students has gone from
        mediocre to above average"; "the performance was middling
        at best" [syn: {average}, {fair}, {middling}]
     3: poor to middling in quality; "there have been good and
        mediocre and bad artists"