英和和英

発音

• (Received Pronunciation) IPA: /lɛə/, (less often) /ˈleɪ.ə/
• (General American) IPA: /ˈleɪ.əɹ/, (less often) /leɹ/
• 韻: -ɛə(ɹ), -eɪə(ɹ)
• Homophone: lair (monosyllabic form)

名詞

layer (plural layers)

1. A single thickness of some material covering a surface.

   Wrap the loaf in two layers of aluminum foil before putting it in the oven.

   After the first coat of paint dried, he applied another layer.

   1. An item of clothing worn under or over another.

      It's cold now but it will warm up this afternoon. Make sure you wear layers.

2. A (usually) horizontal deposit; a stratum.

   I find seven-layer cake a bit too rich.

   • 2012, Chinle Miller, In Mesozoic Lands: The Mesozoic Geology of Arches and Canyonlands National Parks, Kindle edition:

     Sometimes, the underlying layers are exposed by erosion, revealing the story of the rocks like an open book.

3. One of the items in a hierarchy.

   mired in layers of deceit

   • 2001, C/C++ Users Journal, volume 19, page 38:

     Right above the database access layer sits a number cruncher that performs any calculations that a particular request may require, such as computing a standard deviation. In many cases, this layer just forwards raw numbers.

4. (computer graphics, by analogy to a stack of transparencies) One in a stack of (initially transparent) drawing surfaces that comprise an image; used to keep elements of an image separate so that they can be modified independently from one another.
5. (networking) One of the seven network switch pieces in the Open Systems Interconnection model: application, presentation, session, transport, network, data link, and physical.
6. (computing) An alternative keymap accessed through a modifier key or toggle.

同意語

• (single thickness): lay (obsolete)
• (stratum): stratum

派生語

動詞

layer (third-person singular simple present layers, present participle layering, simple past and past participle layered)

1. (ambitransitive) To cut or divide into layers.
2. (ambitransitive) To arrange in layers.

   Layer the ribbons on top of one another to make an attractive pattern.

語源 2

From lay +‎ -er.

発音

• (Received Pronunciation) IPA: /ˈleɪ.ə/
• (General American) IPA: /ˈleɪ.ɚ/
• 韻: -eɪə(ɹ)

名詞

layer (plural layers)

1. A person who lays anything, such as tiles or a wager.
   • 1890, The Argosy, volume 49, page 183:

     If fortune ever favoured any venturesome layer of bets, Tom Elliot was certainly the one that day.

2. A mature female bird, insect, etc. that is able to lay eggs.

   As for which hen we'll cull for next Sunday's dinner, we certainly won't eat Henrietta yet — she's still a prime layer.

   When dealing with an infestation of headlice, the first step is to eliminate the layers.

   1. A hen kept to lay eggs; a breed of chicken bred to maximize laying output.
      • 1941, Laura Ingalls Wilder, Little Town on the Prairie:

        “Mrs. Boast can’t have got all these from one hatching,” [Ma] said. “I do believe there’s not more than two cockerels among them.” “The Boasts have got such a head-start with chickens, likely they’re planning to eat friers this summer,” said Pa. “It may be she took a few cockerels out of this flock, looking on them as meat.” “Yes, and replaced them with pullets that will be layers,” Ma guessed. “It would be Mrs. Boast all over. A more generous woman never lived.”

      Coordinate terms: broiler, fryer, roaster, stewer

      We keep a flock of layers and flock of broilers.

3. A shoot of a plant, laid underground for growth.

派生語

Further reading

• “layer”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.
• William Dwight Whitney, Benjamin E[li] Smith, editors (1911), “layer”, in The Century Dictionary […], New York, N.Y.: The Century Co., →OCLC.

アナグラム

• Arely, Arley, Early, Leary, Raley, Rayle, early, leary, re-lay, relay