Polo dream meaning is explained below using 3 different sources. Each interpretation is shown with its source.

Interpretation 1 — Ariadne Green

An equestrian sport played predominantly by men, playing polo in a dream may indicate that you have entered an arena dominated by male ideals. It may point to the fact that you have given up your individuality to fit into a man’s world.
Source: Ariadne's Book of Dream Author: Ariadne Green

Interpretation 2 — Stearn Robinson - Tom Corbett

A dream of playing or watching polo predicts an approaching increase in material wealth, probably through a legacy.

See also Horse.

Source: The Complete Guide to Interpreting Your Dreams Author: Stearn Robinson - Tom Corbett

Interpretation 3 — Margaret Hamilton

Using one’s personal abilities and strength to succeed; see “horse” and “game”
Source: Dream Dictionary Unlimited Author: Margaret Hamilton