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ufo

Today it means: An "unfinished object" in knitting or other kinds of craft. Full definition →

First used 20th c.

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ufo · noun¹

Reading of UFO as a word in its own right.

UFO · noun²

Initialisms.

First known use, by meaning

from 20th c. Initialism of unidentified flying object; (loosely) an alien spacecraft.
from 20th c. An "unfinished object" in knitting or other kinds of craft.
2022 Initialism of ultrared flattened object.

Etymology from Wiktionary, CC BY-SA 4.0.