Meaning of “emotion” - Learner’s Dictionary

emotion

noun [ C, U ] us uk /ɪˈməʊʃən/
Her voice trembled with emotion.His face showed very little emotion.I had mixed emotions.He tried hard to keep his emotions under control.She had to learn to deal with negative emotions.

B2 a strong feeling such as love or anger, or strong feelings in general:

He finds it hard to express / his emotions.
She was overcome with emotion and burst into tears.

(Definition of “emotion” from the Cambridge Learner’s Dictionary © Cambridge University Press)