havelock

• 一种套在制服帽（如军帽、警帽）上的布质帽套，后部带有一片垂布，可遮住后颈以防日晒。

A cloth covering for a service cap with a flap that extends over the back of the neck, designed to protect the neck from direct sunlight.

1. Sun-protective cap flapC1formal

   A cloth covering attached to a military or service cap, featuring a flap that extends down over the back of the neck to shield it from direct sunlight.

   遮阳颈帘

   • The soldiers wore havelocks during their desert deployment.
   • He adjusted his havelock to better cover his neck from the intense sun.
   • The vintage uniform included a traditional havelock for sun protection.