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"moment" is also used as a crossword clue. If that's what you saw, the answer is often mo (2 letters).
Definitions
Very short time; point in time
Word origin
From Middle English moment, from Old French moment, from Latin mōmentum. Doublet of momentum and movement.
Used in a sentence
“...over everything there lay a deposit of heavy white dust, which was only blown off one moment to thicken on another.”
“Wait a moment, while I lock the front door.”
“Then came a maid with hand-bag and shawls, and after her a tall young lady. She stood for a moment holding her skirt above the grimy steps,[…], and the light of the reflector fell full upon her.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Very short time”6 letters
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