Definify.com
Webster 1913 Edition
Tubercle
1.
A small knoblike prominence or excrescence, whether natural or morbid;
as, a
tubercle
on a plant; a tubercle
on a bone; the tubercles
appearing on the body in leprosy.2.
(Med.)
A small mass or aggregation of morbid matter; especially, the deposit which accompanies scrofula or phthisis. This is composed of a hard, grayish, or yellowish, translucent or opaque matter, which gradually softens, and excites suppuration in its vicinity. It is most frequently found in the lungs, causing consumption.
Webster 1828 Edition
Tubercle
TU'BERCLE
, n.[L. tuberculum, from tuber, a bunch.]1.
A pimple; a small push, swelling or tumor on animal bodies.2.
A little knob, like a pimple, on plants; a little knob or rough point on the leaves of some lichens, supposed to be the fructification.