thunk

Short definition from Wiktionary

Verb

1. 1
   past participle of think
2. 2
   To strike against something, without breakage, making a "thunk" sound.
3. 3
   To delay (a computation).
4. 4
   To execute (code) by means of a thunk.

Interjection

1. 1
   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.

Noun

1. 1
   A delayed computation.
2. 2
   In the Scheme programming language, a function or procedure taking no arguments.
3. 3
   A specialized subroutine that one software module uses to execute code in another module.