(American spelling) A person who takes part in a trial (of a drug etc.)

(said of people and their conviction) Firm; unshakeable; unyielding; determined. / (of an object) Very difficult to break, pierce, or cut.

A local government area of Abia State, Nigeria.

(uncountable, countable) Act of expending or paying out. / (uncountable, countable) The amount expended; expense; outlay.