A brokerage account is an account where someone can deposit after-tax dollars and purchase various investments (mainly stocks, bonds, mutual funds, and ETFs) with those dollars, for the purpose of earning a return on their investments.
Pro Tip: This is the most flexible investment account, but is the least tax-advantaged, as the contributions are after-tax and the gains are also taxed.
See also:
Q&A: How is a brokerage (taxable investment) account taxed?
Q&A: What is a brokerage (taxable investment) account?
