1.Definition: keenly excited (especially sexually) or indicating excitement

"His face all ablaze with excitement"

Related Adjective(s):aflame, aroused

2.Definition: lighted up by or as by fire or flame

"Forests set ablaze (or afire) by lightning"

Related Adjective(s):afire, aflame, aflare, alight

3.Definition: lighted with red light as if with flames

"Streets ablaze with lighted Christmas trees"

Related Adjective(s):inflamed, reddened

4.Definition: resembling flame in brilliance or color

"Maple trees ablaze in autumn"