The term 'Pasture Call' refers to the sound made by animals in a pasture. This sound is typically made up of four distinct noises: BLEAT (5 letters), BAA (3 letters), MOO (3 letters), and maa (3 letters). Bleating is the sound made by sheep, baaing is the sound made by goats, mooing is the sound made by cows, and maas are the sounds made by llamas. All of these animals can be found in pastures, and when they make their respective noises together, it creates the sound known as 'Pasture Call'.