tuber
nounA swollen, fleshy, usually underground outgrowth of the stem or rhizome of a plant, such as the potato, bearing buds from which new plant shoots arise.
nounA similar outgrowth of a plant root.
nounA rounded projection or swelling; a tubercle.
nounIn botany, a subterranean body, usually of an oblong or rounded form, consisting morphologically of a stolon-like branch of a rhizome, much thickened, commonly at the end, and beset with “eyes,” which are properly modified axillary buds.
nounA genus of subterranean discomycetous fungi, the truffles, having the peridium warty or tubercled, without definite base, the asci ovoid or globose, and one- to three- or (rarely) four-spored. About 50 species are known. T. æstivum is the common truffle. See
In pathol., anat., and zoology, some rounded swelling part; a tuberosity; a tubercle; a knot or swelling which is not the result of disease: used chiefly as a Latin word (with Latin plural tubera).
nounA fleshy, rounded stem or root, usually containing starchy matter, as the potato or arrowroot; a thickened root-stock. See
A genus of fungi. See