Bonce
/bɑːns/
Definition 1 of 1
Pro Tip 1/3British Slang
Bonce is a British slang term, so it's more common in the UK than other English-speaking countries. 
I almost dropped that vase right on my bonce!
Pro Tip 2/3Informal Usage
Use 'bonce' in casual conversations, not in formal or professional settings. 
You've got a huge sticker stuck on your bonce!
Pro Tip 3/3Humorous Tone
'Bonce' often implies a lighthearted, humorous tone when talking about the head. 
Watch your bonce while going through that low doorway!