awaiter
nounEtymology From Middle English awaytur; equivalent to await + -er.
1
One who awaits.
- these awaiters of articulate acknowledgment1916, Edith Wharton, “The Long Wards”, in The Book of the Homeless:
2
Computing, Engineering, Mathematics, Natural sciences, Physical sciences, Programming, Sciences An object that waits for the completion of an asynchronous task.