Apron (redirected from aprons)

apron

1. the part of a stage extending in front of the curtain line; forestage

2. a hard-surfaced area in front of or around an aircraft hangar, terminal building, etc., upon which aircraft can stand

3. a continuous conveyor belt composed usually of slats linked together

4. a protective plate screening the operator of a machine, artillery piece, etc.

5. a ground covering of concrete or other material used to protect the underlying earth from water erosion

6. Geology a sheet of sand, gravel, etc., deposited at the front of a moraine

7. Golf the part of the fairway leading onto the green

8. Machinery the housing for the lead screw gears of a lathe

---

apron [′ā·prən]

(aerospace engineering)

A protective device specially designed to cover an area surrounding the fuel inlet on a rocket or spacecraft.

(building construction)

A board on an interior wall beneath a windowsill.

The vertical rear panel of a sink attached to a wall.

A section of a concrete slab extending beyond the face of a building on adjacent ground. Also known as skirt; skirting.

A vertical panel installed behind a sink or lavatory.

(civil engineering)

A hard-surfaced area, usually paved, adjacent to a ship or the like, used to park, load, unload, or service vehicles.

A covering of a material such as concrete or timber over soil to prevent erosion by flowing water, as at the bottom of a dam.

A concrete or wooden shield that is situated along the bank of a river, along a sea wall, or below a dam.

In a railroad system, a bridge structure that carries tracks and is hinged to land for connecting the deck of a railroad-car ferry to the shore.

(geology)

outwash plain

(hydrology)

ram

(mechanical engineering)

A plate serving to protect or cover a machine.

(mining engineering)

A canvas-covered frame set at such an angle in the miner's rocker that the gravel and water passing over it are carried to the head of the machine.

(ordnance)

That portion of the superior slope of a parapet or the interior slope of a pit designed to protect the slopes against blast.

The hinged portion of a shield.

A removal screen of camouflage material placed over or in front of artillery guns.

---

apron

1. A flat broad piece of finished lumber or trim placed directly under a windowsill.

2. A flat piece of wood mounted under the base of a cabinet.

3. Same as counterflashing.

4. Same as apron flashing.

5. Paneling on the exterior of a building which serves as a protection against weather or as a decorative feature.

6. That portion of a concrete slab which extends beyond the face of a building on adjacent ground, as the extension of a garage floor.

7. A vertical panel at the back of a sink or lavatory.

8. In a theater, that part of a stage which projects into the audience area beyond the proscenium and curtain line; a forestage.

---

Apron 

the pervious part of the channel shoring in the tail water of a spillway, usually designed to connect a water apron with the channel and to protect the channel from erosion; it sometimes also serves to damp pulsations and to equalize and reduce the velocities of the water flow. The part of the apron that abuts the water apron is in the form of a thick cover of individual concrete slabs and blocks, concrete and reinforced-concrete revetments (slabs connected by a flexible reinforcement), or cribs filled with rock. The end part is made of more pliant elements, such as gabions, fascines, and rock fill.