This is the 10456th most frequent Swedish word.
kläcka
"To hatch" or "to come up with (an idea)."
Here, 'kläcka' is used idiomatically to mean 'come up with' or 'conceive' an idea.
Hon lyckades kläcka en genial idé för projektet.
She managed to come up with a brilliant idea for the project.
In this context, 'kläcka' refers to the action of hatching eggs, a literal biological process.
Fåglarna i boet började kläcka sina ägg.
The birds in the nest started hatching their eggs.
Again used figuratively, 'kläcka' here implies the process of suggesting or generating ideas.