Where does “наглавак” come from?

наглавак (Serbo-Croatian) comes from Serbo-Croatian -ак, from Proto-Slavic -ъkъ, from Proto-Slavic -kъ, from Proto-Indo-European -kos — Creates deadjectival and desubstantival...

Definitions

Ancestry of “наглавак”, step by step

StepLanguageWordMeaning
1Serbo-Croatian-акSuffix appended to words to create a masculine...
2Proto-Slavic-ъkъForms diminutives from old u-stem nouns;...
3Proto-Slavic-kъDeverbal, forms token nouns; From expressive or...
4Proto-Indo-European-kosCreates deadjectival and desubstantival...
Every word from Proto-Indo-European -kos →Every word from Proto-Slavic -kъ →Every word from Proto-Slavic -ъkъ →