union

the set that comprises all the elements (and no others) contained in any of two or more given sets.

1. The union of set A and set B contains all the elements that are in A, in B, or in both.
2. The union of the sets {1, 2, 3} and {3, 4, 5} is {1, 2, 3, 4, 5}.
3. In mathematics, the symbol ∪ is used to represent the union of two sets. For example, A ∪ B means the union of set A and set B.

by Arminkshipper September 02, 2024

Kern

a lightly equipped Irish foot soldier.

In ancient Irish conflicts, the Irish fought fiercely as kern, relying on their agility and conventional weapons to defeat their adversaries.

by Arminkshipper June 15, 2025

Case

a person whose position is seen as pitiful or beyond hope of improvement.

Vicky was a tragic case.

by Arminkshipper June 20, 2024

Button your lip

Put an end to or hold off on speaking.

Little Sarah blurted out the surprise party plan, but her mom quickly shushed her with, "Button your lip, Sarah! It's a surprise!"

by Arminkshipper July 08, 2024

Packed out

(of a place) very crowded.

"The concert venue was packed out, with every seat filled and people standing shoulder to shoulder in anticipation of the show."
(The sentence uses the word "packed out" to describe the venue as being very crowded without defining the word explicitly.)

by Arminkshipper June 20, 2025

Formal

an occasion on which evening dress is worn.

"the college will be hosting their annual formal on February 6"

by Arminkshipper June 30, 2025

doing

a beating or scolding.

"someone had given her a doing"

by Arminkshipper July 20, 2024