Noah Webster's Dictionary 1. (n.) Making an unnecessary show or pretentious display to impress others; -- usually in a detractive sense. 2. (n.) A show or spectacle.

Multi-Version Concordance Ostentation (1 Occurrence) 1 John 2:16 because all that 'is' in the world -- the desire of the flesh, and the desire of the eyes, and the ostentation of the life -- is not of the Father, but of the world, (YLT)