A consonant sound is a type of speech sound produced when airflow is obstructed in some way by the mouth, tongue, or throat. These sounds are essential in forming words and can be found at the beginning, middle, or end of a word. Examples of consonant sounds include b, d, and s. Consonant sounds can be classified into different categories based on their characteristics. For instance, they can be voiced, like z, where the vocal cords vibrate, or voiceless, like s, where they do not. Understanding consonant sounds is crucial for language development and pronunciation.