Noun
1. a military campaign designed to achieve a specific objective in a foreign country
2. an organized group of people undertaking a journey for a particular purpose;
"an expedition was sent to explore Mars"3. a journey organized for a particular purpose
4. a journey taken for pleasure;
"many summer excursions to the shore""it was merely a pleasure trip""after cautious sashays into the field"5. the property of being prompt and efficient;
"it was done with dispatch"