little red dot · noun1
From little + red + dot. From only being visible beyond the red end of the visible spectrum, being a small and unresolved dot in imaging.
Little Red Dot · proper noun2
From the appearance on maps indicating the position of Singapore, being a red dot position marker, that completely covers all of Singapore on such maps. Originally a derogatory term coined by 3rd President of Indonesia (1998—1999) and 7th Vice President of Indonesia B. J. Habibie in 1998.
Etymology from Wiktionary, CC BY-SA 4.0.