What can be inserted to provide for delivery or drawing off liquid into or from a blood vessel, or inserting a surgical instrument?
What is the name for a piece of exercise equipment consisting of a metal bar, one or more sets of weight plates, and a set of collars?
What was the popular name for Bethlem (or Bethlehem) Hospital, the first home for the insane in Britain established in 1403?
Which poisonous compound can be a gas, solid or liquid, the most infamous application of which was use by the Nazi regime in Germany for mass murder in some gas chambers during the Holocaust?
