soapbox

UK: /ˈsəʊpbɒks/ US: /ˈsoʊpˌbɑks/ ,(sōp′boks′)

WordReference Random House Learner's Dictionary of American English © 2025

soap•box or soap box /ˈsoʊpˌbɑks/   n. [countable]

1. a stand or platform, such as one set up on a street, from which a speaker delivers a speech or political comment.

WordReference Random House Unabridged Dictionary of American English © 2025

soap•box  (sōp′boks′), n. 

1. Also, soap′ box′. an improvised platform, as one on a street, from which a speaker delivers an informal speech, an appeal, or political harangue.

adj. 

2. of, pertaining to, or characteristic of a speaker or speech from a soapbox.

• soap + box¹ 1650–60

Collins Concise English Dictionary © HarperCollins Publishers::

soapbox / ˈsəʊpˌbɒks/ noun

1. a box or crate for packing soap
2. a crate used as a platform for speech-making
3. a child's homemade racing cart consisting of a wooden box set on a wooden frame with wheels and a steerable front axle