slow roll

Short definition from Wiktionary

Verb

1. 1
   To make a long pause before calling an all-in bet with a strong, usually very strong, hand.
2. 2
   To make a long pause before revealing one's winning hand.
3. 3
   To obstruct by delaying; to slow-walk.
4. 4
   Alternative form of slow roll.

Noun

1. 1
   An instance of slow rolling.
2. 2
   A maneuver in which the aircraft makes a complete rotation around its roll axis while maintaining a straight and level flight path.