set about

Short definition from Wiktionary

Verb

1. 1
   Used with the adverb sense of about.
2. 2
   Used with the adverb sense of about: To circulate or spread (news, a rumour, etc.)
3. 3
   Used with the preposition sense of about: To plant trees or other vegetation in (a place).
4. 4
   Used with the preposition sense of about: To encircle or surround (something) with other things.
5. 5
   Used with the preposition sense of about: To attack (someone); to set upon.
6. 6
   Used with the preposition sense of about: To start doing or to devote oneself to some task; to set upon.