e/Poison ring

Information
has gloss	eng: A poison ring or pillbox ring is a type of ring with a container under the bezel or inside the bezel itself that could be used to hold poison or another substance. They became popular in Europe during the sixteenth century. The poison ring was used either to slip poison into an enemy's food or drink, or to facilitate the suicide of the wearer in order to escape capture or torture.
lexicalization	eng: poison ring
instance of	(noun) jewelry consisting of a circlet of precious metal (often set with jewels) worn on the finger; "she had rings on every finger"; "he noted that she wore a wedding band" ring, band