strike up

Related to strike up: strike up a conversation

strike up

1. To initiate, instigate, or begin something. I saw you striking up a conversation with Jack—what did you two discuss? You might be able to strike up a deal with her if you mention your father's connection to the business. The detective and the con man struck up a unique friendship.
2. Of a band, to begin playing music. Can be used transitively or intransitively. The band struck up and got everyone dancing. Come on, boys, let's strike up a tune that'll really get this place hopping!
See also: strike, up
Farlex Dictionary of Idioms.

strike something up

to begin something; to cause something to begin. (Typically, the playing of a band, a conversation, or a friendship.) We tried to strike a conversation upto no avail. I struck up a conversation with Molly.
See also: strike, up

strike up a friendship

to become friends (with someone). I struck up a friendship with John while we were on a business trip together. If you're lonely, you should go out and try to strike up a friendship with someone you like.
See also: friendship, strike, up
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

strike up

v.
1. To initiate or begin some conversation or relationship: They often see each other on the bus, but neither of them ever strikes up a conversation. My best friend and I struck it up while working together in the Peace Corps.
2. To reach some agreement: You might be able to get a discount if you strike up a deal with the storekeeper.
3. To start to play or sing something: A few of the musicians struck up a waltz. Everybody got up to dance once the band struck up.
4. To cause something to start to play or sing: Strike up the orchestra and let the celebration begin!
See also: strike, up
The American Heritage® Dictionary of Phrasal Verbs.
See also:
  • strike up a friendship
  • strike up a conversation
  • strike up a conversation (with one)
  • open (up) a can of worms
  • open up a can of worms
  • spring a trap
  • spring a/the trap
  • spark up
  • take the initiative
  • move for (something)