Noun: dream, daydream, vision.
Unelma comes from uni, which means ”dream” or ”sleep” plus the suffix –lma.
Let’s translate the rest of the headline from Helsingin Sanomat, ”Christopher O’Neill intoutui suutelemaan prinsessa Madeleinea monta kertaa.”
Intoutui is the third-person singular past form of intoutua, a verb that means ”to become enthusiastic.”
Suutelemaan is the 3rd infinitive form of suudella, which means ”to kiss,” rendered in our example in the illative singular. (See suudella fully conjugated here.) In the 3rd infinitive, the verb corresponds to the English gerund (”verb + ing” form) and behaves as a noun. It is inflected only in a limited number of noun cases.
Monta kertaa means ”many times.” Note that kertaa is in the partitive when used in this common phrase.
The whole headline might translate as ”Christopher O’Neill became enthusiastic, kissing princess Madeleine many times.”