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
Caligula	kə-LIG-yoo-lə (English)	History
Jagusia	yah-GUW-shah	Polish
Stylianos	-	Greek, Late Greek
Alkiviadis	-	Greek
Augustine (1)	AW-gəs-teen, ə-GUS-tin	English
Gervasius	-	Ancient Germanic (Latinized)