The Collaborative International Dictionary of English v.0.48:

Morceau \Mor`ceau"\, n. [F.]
   A bit; a morsel.
   [1913 Webster]

WordNet (r) 3.0 (2006):

morceau
    n 1: a short literary or musical composition

Moby Thesaurus II by Grady Ward, 1.0:

57 Moby Thesaurus words for "morceau":
   article, causerie, chip, crumb, descant, discourse, discussion,
   disquisition, dissertation, essay, etude, examination, excursus,
   exposition, feature, first approach, homily, introductory study,
   lucubration, memoir, monograph, morsel, nip, note, outline,
   pandect, paper, paragraph, patch, piece, preliminary study,
   prolegomenon, research paper, scrap, screed, shiver, shred, sketch,
   sliver, smithereen, snick, snip, snippet, special article,
   splinter, stitch, study, survey, tag, tatter, term paper, theme,
   thesis, tract, tractate, treatise, treatment