English

lignotuber

From ligno- + tuber.

A compound of ligno- + tuber

Proto-Indo-European *leǵ- ‘to collect’

Proto-Indo-European *leǵ-no-m ‘that which is collected’

Proto-Italic *legnom

Latin lignum ‘wood’

Latin tūber ‘bump, hump, swelling’

English tuber

Today it means

noun A starchy enlargement (caudex), usually of a root, of a woody plant, serving to store water.

Language periods are conventional ranges, not dates for this word.

Etymograph / lignotuber