Where does “lobe” come from?

lobe (Middle French) comes from New Latin lobus, from Ancient Greek λοβός, from Proto-Indo-European leh₂b- — to hang loosely; to lap, lick.

Ancestry of “lobe”, step by step

Step	Language	Word	Meaning
1	New Latin	lobus	a lobe; hull, husk, pod; lobe
2	Ancient Greek	λοβός	lobe of the ear; lobe of the liver; lobe of the...
3	Proto-Indo-European	leh₂b-	to hang loosely; to lap, lick

lobe — Etymology, Origin & Word History | Etymology Explorer