embolus

Definitions

1. An obstruction causing an embolism: a blood clot, air bubble or other matter carried by the bloodstream and causing a blockage or occlusion of a blood vessel.
2. The structure on the end of the palp of male arachnids which contains the opening to the ejaculatory duct.

Equivalents

Examples

“Those spiders with a simple bulb insert⟳ most of this; those with a complex palp insert⟳ only the embolus, which in some species is very long […]”

CEFR level