Definition
A woven sleeve of fine metal wires that surrounds an inner conductor or hose. In aircraft electrical wiring, braid forms the outer shielding layer that blocks electrical interference. In aircraft hoses and hydraulic lines, braid forms a reinforcing layer that contains internal pressure and resists abrasion.
Plain English
A tube made of many thin wires woven together, wrapped around a wire or hose to either block electrical noise or strengthen the hose against pressure.
Context Anchor
Seen in aircraft electrical wiring, shielding, and flexible connections between metal parts.
Derivation
From Old English bregdan, meaning 'to weave or interlace.' The aviation use keeps the original meaning: strands woven together in a regular pattern.
Why Pilots Care
Prevents electromagnetic interference in critical avionics systems and provides mechanical protection to wiring harnesses.
Analogy
Similar to the protective woven covering found on some audio or charging cables that keeps the inner wires safe.
Intuition Check
Do not think only of braided hair. In aircraft use, braid usually means woven metal strands used to protect wiring or make a flexible electrical connection.
Example Sentence 1
The mechanic flagged a hydraulic hose for replacement after noticing frayed braid near the fitting.
Example Sentence 2
Check the integrity of the braid around the sensor wires during the preflight inspection of the electrical system.