(education) A simple tree-like diagram showing the relationship between a whole and its parts, used in teaching mathematical concepts such as fractions.

plural of part-whole model

(idiomatic) Synonym of play a part

(cricket) a batsman who has limited bowling ability; asked to bowl under special circumstances

(law, archaic) The party to a legal dispute against whom a complaint was initially raised in a court.

(law, archaic) The party to a legal dispute who first raised a complaint in a court. / (law, archaic) The first party named in a contract, generally the party agreeing to perform a duty thereunder.

plural of party of the second part

plural of party of the first part

It is often wise to refrain from seemingly brave speech or action.

(idiomatic) To publicly express a sentiment which one is expected to keep to oneself; to reveal an ulterior motive.