What does Venus “Mean” in Astrology?

Venus symbolizes FEMININITY, which consists of BEAUTY, LOVE, and RECEPTIVITY.

Beauty involves both the senses (SENSITIVITY) and the sense objects (objects of “WEALTH”). Beautiful objects are threefold: NATURAL BEAUTY (like flowers), PERSONAL BEAUTY (appearance), and CREATED BEAUTY (like art).
LOVE is typified as ROMANCE, but has many variations, all the way down to its social form: PEACE.
RECEPTIVITY is the ability to produce beautiful results from the input of others. It involves COOPERATION, which is an important part of peace, and which, in the context of romance, becomes the foundation of MARRIAGE.