Source : Webster's Revised Unabridged Dictionary (1913)

Sextet \Sex*tet"\, Sextetto \Sex*tet"to\, n. (Mus.)
   See {Sestet}.

Source : WordNet®

sextet
     n 1: a musical composition written for six performers [syn: {sextette},
           {sestet}]
     2: the cardinal number that is the sum of five and one [syn: {six},
         {6}, {VI}, {sixer}, {sise}, {Captain Hicks}, {half a
        dozen}, {sestet}, {sextuplet}, {hexad}]
     3: six performers or singers who perform together [syn: {sextette},
         {sestet}]
     4: a set of six similar things considered as a unit [syn: {sextette},
         {sestet}]
     5: six people considered as a unit [syn: {sextette}, {sixsome}]