from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A carton in which soap is packed.
- n. A temporary platform used while making an impromptu or nonofficial public speech.
- intransitive v. Informal To engage in impromptu or nonofficial public speaking, often flamboyantly.
- idiom on (one's) soapbox Speaking one's views passionately or self-importantly.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A crate for packing soap, or, by extension, any inexpensive crude platform raised above the surrounding level to give prominence to the person on it, especially when used for speeches.
- n. A talk about one's pet topic (or the topic itself), especially when only tangentially relevant to an ongoing discussion.
- n. a soapbox car
- v. To give a speech from (or as if from) a soapbox.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a crate for packing soap
- n. a platform raised above the surrounding level to give prominence to the person on it
soap + box (Wiktionary)