caller
n.-
1 telephone (n.) B1 Intermediatethe person who is making a telephone call to you.
the individual who initiates a telephonic communication.
ExampleThe caller hung up before I could reach the phone.
ExampleThe receptionist asked the caller to hold while she attempted to locate the manager in the warehouse.
- phoner
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2 visitor (n.) B2 Upper Intermediate Formala person who visits a place or someone's home.
a person who pays a visit, often used in a slightly formal or traditional context.
ExampleWe weren't expecting any callers so late in the evening.
ExampleThe old manor house rarely received callers, as the owner preferred a life of quiet seclusion.
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3 announcer (n.) B2 Upper Intermediatethe person who calls out numbers in a game like bingo or tells dancers which moves to make.
the person responsible for announcing numbers in games of chance or directing participants in traditional dances.
ExampleThe bingo caller shouted the numbers clearly so everyone could hear.
ExampleThe square dance caller kept the energy high, guiding the couples through a series of increasingly complex patterns.
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4 programming (n.) C1 Advanced Technical Computinga piece of computer code that starts or runs another piece of code.
a function or routine that invokes another function, which is known as the callee.
ExampleThe error happened because the caller sent the wrong type of data.
ExampleIf the callee encounters an exception, it must be handled by the caller to prevent the entire application from crashing.
UsageOften used in the context of stack traces or debugging to identify the source of a command.
- invoker
- callee
From Middle English callar, equivalent to call + -er.