'Midsummer' definitions:

Definition of 'midsummer'

From: WordNet
noun
June 21, when the sun is at its northernmost point [syn: summer solstice, June 21, midsummer] [ant: winter solstice]

Definition of 'Midsummer'

From: GCIDE
  • Midsummer \Mid"sum`mer\, n. [AS. midsumor.] The middle of summer. --Shak. [1913 Webster]
  • Midsummer daisy (Bot.), the oxeye daisy. [1913 Webster]