English Reference

Word

jacks

US/ˈdʒæks/

UK/dʒˈæks/

Definitions

01children's game

B1

n. a game where you try to pick up small metal objects while a ball bounces.

n. a traditional game played with a set of small metal or plastic pieces and a ball, involving specific manual dexterity tasks.

“The children sat on the porch playing jacks for hours during the summer afternoon.”

“While modern children often prefer digital entertainment, traditional games like jacks still appear in schoolyards as seasonal fads.”

Synonyms

knucklebonesjackstones

02the toilet

C1

n. a slang word for a toilet or bathroom.

n. a slang term for a lavatory or toilet, primarily used in Irish English.

“He asked his friend where the jacks were before they ordered their drinks.”

“The pub was so crowded that there was a constant queue for the jacks throughout the entire match.”

Informal · Dialect

Teaching tip

This sense is specific to Ireland; using it elsewhere may cause confusion as listeners might think of the game or the tool.

03plural of jack

A2

n. more than one 'jack', such as the tools used to lift cars or the playing cards.

n. the plural form of 'jack', referring to mechanical lifting devices, playing cards between the ten and queen, or electrical connectors.

“The mechanic used two heavy-duty jacks to lift the van off the ground.”

“In many card games, the four jacks hold a unique strategic value depending on whether they are designated as wild cards.”

Real-World Examples

“Headphone jacks and microSD card slots are now rare, and even the SIM card slot is quickly fading away.”
Ars Technica · 4 Sept 2026

This entry

Level
C2 · Proficiency
Frequency
Frequent
Updated

Scan code

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English Reference