To do one's fair share of work, or take one's share of responsibility.

(idiomatic) to show support for or defend the actions of someone in the course of a debate, argument, etc.

(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

(euphemistic) Genitals and female nipples.

hairstyle where the hair is separated down the middle.

plural of part of speech

plural of bit part

(idiomatic) An insult or barbed comment issued as the speaker departs or the conversation comes to an end.