BL Governmental & Military Abbreviation

Biosafety Level

Boulevard

A wide city street usually planted with shade-trees.

Bill of Lading

A document that establishes the terms of contract between a shipper and a trasportation company. It serves as a document title, a contract of carriage, and a receipt for goods.

Bibliography

Baseline

The electrical signal from a sensor when no measured variable is present. Often referred to the output at no-load condition.

Battle Level

Blade

Of oar Broad, flat part that is put vertically in water to form pivot of a lever. Of turbine, small piece of steel, perpendicular to rotor drum, against which steam impinges. Of propeller One of projections from boss, and shaped as part of a screw thread

Blank

Simulating the nitriding operation without introducing nitrogen. This is usually accomplished by using an inert material in place of the nitriding agent or by applying a suitable protective coating to the ferrous alloy.  OR Solid metal disk or plate inserted into a line to prevent the flow of gases or liquids through the line. OR Blank1 The character entered by pressing the spacebar. also space character.

Bale

Package of cargo that is wrapped in canvas, hessian, etc Also old name for bucket, whence 'baler'