This is very likely one of the words that were created for the dialogues of Star Trek III: The Search for Spock, as there was a scene of some Klingons discussing about "living under the flag of the Federation".
tlhIm is commonly used for a fabric wall hanging (that might, for example, have a picture of the Klingon emblem on it). If a piece of cloth is displayed at the end of a pole, it is considered a joqwI' ("flag");
(message of Jan 09, 2012)
Cite this entry
Definition of {joqwI'}
from the Klingon Language Wiki:
https://klingon.wiki/Word/JokwI-
Retrieved 03 Feb 2023