thunk

Representing the dull sound of the impact of a heavy object striking another and coming to an immediate standstill, with neither object being broken by the impact.

To strike against something, without breakage, making a "thunk" sound.

I was thunked on the head by his stick.

A delayed computation.

Not surprisingly, a thunk is more expensive to store than a single number[…].

In the Scheme programming language, a function or procedure taking no arguments.

A specialized subroutine that one software module uses to execute code in another module.

If the provider of these DLLs has not updated the code to a 32-bit environment, you will have to switch to a new 32-bit library or write thunks between your 32-bit code and the 16-bit DLL.