furuncle
Concise Oxford English Dictionary © 2008 Oxford University Press:
furuncle /ˈfjʊərʌŋk(ə)l/
▶noun technical term for boil2.
– derivatives
furuncular adjective,
furunculous adjective.
furuncular adjective,
furunculous adjective.
– origin ME: from L. furunculus, lit. ‘petty thief’, also ‘knob on a vine’ (regarded as stealing the sap), from fur ‘thief’.
'furuncle' also found in these Oxford entries:

