foray

Short definition from Wiktionary

Noun

1. 1
   A sudden or irregular incursion in border warfare; hence, any irregular incursion for war or spoils; a raid.
2. 2
   A brief excursion or attempt, especially outside one's accustomed sphere.

Verb

1. 1
   To participate in a foray.
2. 2
   To do or attempt something outside one's typical area of expertise.
3. 3
   To scour an area for goods as part of a foray.