lose (one's) bottle

To lose one's nerve, courage, or resolve to undertake something. Primarily heard in UK. I wanted to ask Steve on a date, but I lost my bottle at the last minute.

Common Names:

Name	Pronounced	Usage
Parth	-	Indian, Gujarati, Marathi, Hindi
Balwinder	-	Indian (Sikh)
Parvin	-	Persian, Azerbaijani
Willamar	-	Ancient Germanic
Haran	-	Biblical, Biblical Hebrew
Maeve	MAYV	Irish, Irish Mythology