The term 'SING' can refer to a variety of activities related to vocal performance. The crossword solutions for this term include 'CHIRP, ' which is a short, high-pitched sound made by birds; 'DESCANT, ' which is a type of singing in which a melody is sung over a pre-existing melody; 'COMPLAIN, ' which is to express dissatisfaction or pain through vocalization; 'CHORUS, ' which is a group of singers performing together; 'CONFESS, ' which is to admit something through vocalization; 'CANTILLATE, ' which is to sing in a melodic manner; 'INTONE, ' which is to speak or sing with a particular tone; 'HYMN, ' which is a religious song of praise; 'RESOUND, ' which is to make a loud noise; 'NARK, ' which is to inform on someone; 'SERENADE, ' which is a romantic song performed for someone; 'PURR, ' which is a low, vibrating sound made by cats; 'PIPE, ' which is to play a wind instrument; 'BLA, ' which is an imitation of the sound of a sheep; 'RAT, ' which is to inform on someone; 'BLAB, ' which is to talk too much; 'TELL, ' which is to communicate information through vocalization; 'CROON, ' which is to sing in a soft, gentle manner; 'TROLL, ' which is to sing a song in a round; 'VOCALIZE, ' which is to produce sound with the voice; 'NAMENAMES, ' which is to sing a list of names; 'CARRYATUNE, ' which is to sing in tune; and 'OUTOFORDERSIGN, ' which is to sing out of tune.