based on custom rather than documentation; "an unwritten law"; "rites...so ancient that they well might have had their unwritten origins in Aurignacian times"- J.L.T.C.Spence
the act of singing; "with a shout and a song they marched up to the gates"
a short musical composition with words; "a successful musical must have at least three good songs"
a distinctive or characteristic sound; "the song of bullets was in the air"; "the song of the wind"; "the wheels sang their song as the train rocketed ahead"
able to attract interest or draw favorable attention; "He added an appealing and memorable figure to popular American mythology"- Vincent Starrett; "an appealing sense of humor"; "the idea of having enough money to retire at fifty is very appealing"
expressing earnest entreaty; "the appealing and frightened look worn by an injured dog"; "she holds out her hand for money, importunate, insistent"; "a pleading note in her voice"