Ablaze is defined as on fire.(adjective)
An example of ablaze is a house that is burning and has flames coming out its windows.
The definition of ablaze is being alive with emotion or excitement.(adjective)
An example of ablaze is the face of a new mother who is grinning from ear to ear with happiness as she looks at her new baby.
See ablaze in Webster's New World College Dictionary
Origin: a- + blaze
See ablaze in American Heritage Dictionary 4
Learn more about ablaze