• Bengali Word কোকিল English definition (noun) migratory bird famous for its sweet note; the cuckoo. কোকিলা (feminine) = কোকিল. কোকিলকণ্ঠ (adjective) sweet-voiced or melodious like the cuckoo. কোকিলকণ্ঠী (feminine) = কোকিল. কোকিলাসন (noun) sitting posture in the practice of কোকিল. কোকিলেক্ষু (noun) a reddish variety of sugarcane.