Where does “mambesto” come from?

mambesto (Esperanto) comes from Esperanto mamo, from Latin mamma, from Latin ferō, from Proto-Italic ferō, from Proto-Indo-European bʰéreti, from Proto-Indo-European bʰēr- — shiny, light brown.

mambesto (Esperanto): mammal, member of the Mammalia taxonomic class

Definitions

mammal, member of the Mammalia taxonomic class

Ancestry of “mambesto”, step by step

mambesto traces back through two separate lines of ancestry.

via Esperanto mamo

Step	Language	Word	Meaning
1	Esperanto	mamo	breast
2	Latin	mamma	a breast; an udder; a pap; a teat, a dug
3	Latin	ferō	to bear; to carry
4	Proto-Italic	ferō	carry, bear
5	Proto-Indo-European	bʰéreti	to be carrying
6	Proto-Indo-European	bʰēr-	shiny, light brown

via Esperanto besto

Step	Language	Word	Meaning
1	Esperanto	besto	animal; nonhuman animal; beast
2	German	Bestie	beast
3	Italian	bestia	beast
4	Latin	bēstia	a beast

Every word from Proto-Indo-European bʰēr- →Every word from Proto-Indo-European bʰéreti →Every word from Proto-Italic ferō →