roll out

Short definition from Wiktionary

Verb

1. 1
   To deploy or release (a new film or software, etc.); to launch (a product or service), especially in a gradual fashion across multiple regions.
2. 2
   To leave a place at a leisurely pace.
3. 3
   Used other than figuratively or idiomatically: see roll, out.
4. 4
   To use up too much energy when first bowled and to therefore not finish strongly.

Noun

1. 1
   Alternative spelling of rollout.