noun. ['ˈkruːnɪŋ'] the act of singing popular songs in a sentimental manner.
1. Noun, singular or mass Several may vocalize in a rhythmic crooning sound when they are on the nest. 2. Verb, gerund or present participle Soothe your parakeet by crooning gently to her or talking in a calm voice.
noun. ['ˈkruːnɪŋ'] singing in a soft low tone.