yellow streak

yellow streak (down someone's back)

a tendency toward cowardice. Tim's got a yellow streak down his back a mile wide. Get rid of that yellow streak. Show some courage.

Name	Pronounced	Usage
Shichiro	shee-chee-ṙo:	Japanese
Sheena	SHEE-nə	Scottish, English
Archdale	['a:tʃdeil]
Midha	-	Arabic
Ernestas	-	Lithuanian
Geertje	KHAY:R-tyə	Dutch