Where does “posłanko” come from?

posłanko (Polish) comes from Polish posłanie, from Polish posłać, from Polish po-, from Old Polish po-, from Proto-Slavic po- — after.

Ancestry of “posłanko”, step by step

StepLanguageWordMeaning
1Polishposłaniesleeping spot, bed
2Polishposłaćto send away, to pack off, to ship off
3Polishpo-Prepended to imperfective verbs to form iterative...
4Old Polishpo-perfectivizing prefix
5Proto-Slavicpo-after
Every word from Proto-Slavic po- →Every word from Polish po- →Every word from Old Polish po- →