plural tubers
1
a
: a short fleshy usually underground stem bearing minute scale leaves each of which bears a bud in its axil and is potentially able to produce a new plant
Wireworms work beneath the soil, tunneling in the potato tubers and sometimes doing serious damage.—Glenn Drowns
Manioc flour, made from cassava (a starchy tuber), is available at many Latin American markets.—Paul Theroux
compare bulb, corm
b
: a fleshy root or rhizome resembling a tuber
2
plural tubers
: a person who engages in the sport or activity of riding an inner tube (as down a river or snowy slope) : one who participates in tubing
With so many tubers using the river, streambank erosion became a problem at popular exit points.—Jerry Gerlach et al.
Skiers, snowboarders and snow tubers have seen everything Mother Nature can throw at them this winter.—Ron Leonardi
Cite this Entry
“Tuber.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tuber. Accessed 12 Aug. 2026.
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