Which of the following best describes the meaning of "Mellifluous"?

• Mellifluous (adjective)
English meaning: Smooth and pleasant; (of a sound) pleasingly smooth and musical to hear.
Bangla Meaning: (ব্যক্তির স্বর, কথা, সংগীত ইত্যাদি) সুমধুর; সুললিত।

• Example sentences: 
- The singer's mellifluous voice captivated the entire audience.
- Her mellifluous laughter was like music to his ears.
- The poem’s mellifluous rhythm made it a joy to read aloud.

Source:
1. Oxford Learner's Dictionary.
2. Accessible Dictionary by Bangla Academy.