noun🔗ShareA fish of the genus Istiophorus, having a characteristic sail-like fin on its back."While on vacation, we saw a sailfish leap out of the water, its enormous fin catching the sunlight. "fishanimalnatureoceanbiologyChat with AIVocabulary GamePractice Reading
noun🔗ShareThe basking shark."The scuba divers were excited to see a sailfish swimming in the deep blue ocean. "fishanimaloceanChat with AIVocabulary GamePractice Reading
noun🔗ShareThe quillback."The sailfish has a distinctive, high dorsal fin that looks like a sail, earning it the nickname "quillback." "fishnauticalanimalsailingChat with AIVocabulary GamePractice Reading