When an engine is ignited, it produces thrust and boosts the rocket into the sky. After the propellant is used up, delay is activated, producing tracking smoke and allowing the rocket a brief coast.
infirmary (plural infirmaries) 1  A place where sick or injured people are cared for, especially a small hospital; sickhouse. 2  A clinic or dispensary within another institution.
Definition of hospital. 1 : a charitable institution for the needy, aged, infirm, or young. 2 : an institution where the sick or injured are given medical or surgical care âusually used in British English without an article after a preposition.