Source : Webster's Revised Unabridged Dictionary (1913)

Self-consciousness \Self`-con"scious*ness\, n.
   The quality or state of being self-conscious.

Source : WordNet®

self-consciousness
     n 1: embarrassment deriving from the feeling that others are
          critically aware of you [syn: {uneasiness}, {uncomfortableness}]
     2: self-awareness plus the additional realization that others
        are similarly aware of you [ant: {unselfconsciousness}]