to update by providing new or improved equipment or features:
a five-year program of installing new power plants and backfitting existing ones.
- Backflap hinge
Building Trades. flap (def 20a).
a flashback: Backflashes of the heroine’s childhood fill in gaps in the novel’s narrative.
a backward somersault. a dive executed by somersaulting backward. Informal. a complete reversal in attitude or policy: Some committee members did sudden backflips, urging spending cuts instead of expanded programs. to perform a backflip: She backflipped off a bucking horse. Contemporary Examples Some calculating pol, realizing that his position had become unpopular or untenable, would […]
- Back float
a floating position on one’s back with arms extended out to the sides and face upward.