An Apron

1. article of clothing worn over the front of the torso and/or legs for protection from spills; also historically worn by Freemasons and as part of women's fashion.
2. The short cassock ordinarily worn by English bishops.
3. A hard surface bordering a structure or area.

• (aviation) The paved area of an airport, especially the area where aircraft park away from a terminal
• The spreading end of a driveway.
• The paved area below the yellow line on a race track.
• The loading, parking or roadway area immediately beside a railway station
• The portion of a stage extending towards the audience beyond the proscenium arch in a theatre.
• (pinball) A large decal toward the bottom of a pinball table.

4. The sides of a tree's canopy.
5. The cap of a cannon; a piece of lead laid over the vent to keep the priming dry.
6. A removable cover for the passengers' feet and legs in an open horse carriage.