Shield

Shield

Noun & Verb · /ʃiːld/ · a broad protective barrier

Definition

A shield is a broad piece of armour — originally metal, wood, or leather — carried to intercept blows in battle. As a verb, to shield means to protect someone or something from harm, danger, or an unpleasant experience. In modern use it appears in contexts ranging from heat shields on spacecraft to child safeguarding law, cybersecurity firewall shields, and even company logos shaped like shields to convey trustworthiness.

Origin

Shield comes from Old English scield, cognate with Old Norse skjöldr and Old High German scilt. The Proto-Germanic root is skelduz, related to the word for a plank of wood. The carrying of a decorated shield was a mark of a warrior's identity in Germanic cultures — heraldic shields bearing family coats of arms gave rise to the shield shape still used in badges, crests, and brand logos across the world today.