[ noun on-ley, awn-; verb on-ley, awn- ]

  1. an overlay, especially one in relief.

  2. Dentistry. an inlay that restores the occlusal surface of a tooth.

verb (used with object),on·laid, on·lay·ing.
  1. to place or mount (an onlay) on a surface, especially for decorative purposes.

Origin of onlay

1875–80; on + lay1, after verb phrase lay on

Words Nearby onlay Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use onlay in a sentence

  • Couched cord or filoselle is useful in covering the raw edge of the onlay, not so much masking the joints as making them sightly.

    Art in Needlework | Lewis F. Day
  • It disturbs the breadth, which is so valuable a characteristic of onlay.

    Art in Needlework | Lewis F. Day