Where does “chobotnička” come from?

chobotnička (Czech) comes from Czech chobotnice, from Czech -nice, from Czech -ník, from Old Czech -ník, from Proto-Slavic -ьnikъ, from Proto-Slavic -ikъ — *nožь → *nožikъ; *větrъ → *větrikъ; *listъ →...

Ancestry of “chobotnička”, step by step

Step	Language	Word	Meaning
1	Czech	chobotnice	octopus
2	Czech	-nice	Nominal suffix
3	Czech	-ník	Nominal suffix
4	Old Czech	-ník	nominal suffix
5	Proto-Slavic	-ьnikъ	From base concept nouns, forms agent nouns who...
6	Proto-Slavic	-ikъ	nožь → nožikъ; větrъ → větrikъ; *listъ →...

Every word from Proto-Slavic -ikъ →Every word from Czech -ník →Every word from Czech -nice →