protrusion; projection; excrescence
Technical or formal noun for something that sticks out from a surface or body. Often used in medical, architectural, or mechanical contexts.
Please be careful of the protrusions on this machine.
If you're concerned about a skin protrusion, you should see a doctor.
Compound of 突出 (とっしゅつ, 'protrude') + 物 (ぶつ, 'thing'). The reading とっしゅつぶつ follows standard on'yomi.