• blackbery,
• blackbun,
• balckburn,
• backborn,
• blackbean,
• blackburg,
• blackbuk,
• blaccbuck,
• vlackburn,
• blakburn,
• blacburn,
• bleckburn,
• blackburns,
• blakburne,
• blacburne,
• blackburne,
• backburnr,
• bakburnr,
• Blackwurk,
• Blakburd

• black buck,
• black bear,
• blackboard,
• black bean,
• black prince,
• blackbeard,
• black friar,
• black bread,
• blackberry,
• black bryony,
• blackbeetle,
• blackball,
• blackfriar,
• black pine,
• black bream,
• blackbird,
• blackbody,
• blacksburg,
• blockbuster,
• blackford,
• blackbuck,
• black book.

The plural form of the word "blackburn" is "blackburns".

The singular form of the word "Blackburn" is "Blackburn". The word does not change when going from plural to singular.