1. A plan, either written or verbal, that presents an idea or action for consideration: There were several proposals presented to the city council for the widening of the local streets.
2. A suggestion or offer for unification or marriage: Irving made a romantic proposal of marriage over a candlelight dinner.

At the board meeting, the chairperson of the committee, Mr. McMahon, made the proposal that the two businesses be unified.

3. The act of putting forth an idea for consideration and discussion: The heavy rain storms and flooding led to a proposal that the city drains be cleaned.