(in compounds) a crab

a group of people with a common purpose such as research or hobbies / a member organization for socializing, playing and sports; or meeting place for them / extracurricular activities at a school

school (institution dedicated to teaching and learning)

money laundering

self-determination

definitive edition / (of a document): final version / last word

(computing) decision tree

playoff; tiebreaker; a match to decide (something such as the winner)

excess or deficiency

(number theory) deficient number, a number for which the sum of proper divisors is less than that number