Definitions
1.NounAn entity that lends its name to another entity."The statesman Winston Churchill has a namesake, the American novelist Winston Churchill.; Bill Sr's namesake, Bill Jr, is 30 years younger.; Bill Jr's namesake, Bill Sr, is 30 years older."
2.NounA person with the same name as another."The statesman Winston Churchill has a namesake, the American novelist Winston Churchill.; Bill Sr's namesake, Bill Jr, is 30 years younger.; Bill Jr's namesake, Bill Sr, is 30 years older."
3.NounOne who is named after another, often a child named after the parent or an ancestor."Bill Sr's namesake, Bill Jr, is 30 years younger."
4.NounOne for whom another is named, often the parent or ancestor who gave the name to a child."Bill Jr's namesake, Bill Sr, is 30 years older."
5.NounSomething (especially a ship, a building, or a medical condition, symptom, or sign) that is named after someone or something.
6.VerbTo name (somebody) after somebody else.