noun. A tubercle or tuberculum.

noun. In botany, any root of a class embracing both tuberous roots and tubercles: used specifically by Lindley.

noun. The tuberculum cinereum of Rolando.

noun. tubercle

"_Diagnosis_, to be certain, requires the demonstration of the tubercule bacilli and the characteristic cell accumulation of the tubercle in a specimen of tissue removed from the lesion."

cineritious tubercule