nocturn / nocturne [ˈnɔktɜrn]
nocturn – adj. & n. – adj. – pertaining to the night; n. – 1. a group of prayers and readings usually including three psalms, historically forming a division of the three sections of matins; 2. each of the seven divisions of the psalter
nocturne – n. & v. – n. – 1. Music usually a meditative piece suggestive of the night; 2. shrimp, Hippolyte spp. or Macromysis spp., that turns bluish at night; v. – of shrimp – to turn bluish