guard ring

American  

noun

1. a ring worn tightly in front of another ring to prevent the latter from slipping off the finger.

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guard ring British  

noun

1. Also called: guard.   keeper ring.  jewellery an extra ring worn to prevent another from slipping off the finger

2. an electrode used to counteract distortion of the electric fields at the edges of other electrodes in a capacitor or electron lens

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Etymology

Origin of guard ring

First recorded in 1810–20

Example Sentences

She went straight to her room, and she couldn't have lost the ring by the way, for there was a guard ring on the outside of it, and that we found on the dressing-table.

From The Crime of the French Café and Other Stories by Carter, Nicholas

His eyes, however, had noted a few things: traveling suit, scarf pin, watch guard, ring, hatbox, suit case, bag, all expensive and of the finest grade.

From Get-Rich-Quick Wallingford by Chester, George Randolph