wafer

US /ˈweɪ.fɚ/
UK /ˈweɪ.fɚ/
"wafer" picture
1.

a very thin, light, and crisp biscuit, cookie, or cracker, often flavored and used as a garnish or in desserts

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She served ice cream with a chocolate wafer.
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The children enjoyed the vanilla wafers.
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biscuitcookiecracker
2.

a thin disk of unleavened bread, used in the Eucharist or Communion

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The priest consecrated the wafer during the Mass.
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Receiving the wafer is a central part of the ceremony.
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hostcommunion wafer
3.

a thin slice of semiconductor material, such as silicon, used in the fabrication of integrated circuits

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The microchips are built on a silicon wafer.
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Each wafer can contain hundreds of individual chips.
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chipslicesubstrate