(aviation, space travel, of a parachute) Semi-deployed, with the canopy initially restricted from fully opening, in order to avoid subjecting the canopy to excessive air loads or the payload to excessive g-forces from fully deploying at high airspeed.

plural of reefing

A surname from German.

plural of Reef

(surfing) A scraping injury caused by falling on or being dragged over a reef.

plural of reef rash

A reef separated from the adjacent coast by a channel or lagoon.

A knot used to securely tie two pieces of rope together, or to reef sails.

A reef formed by compacted coral skeletons

Rhinecanthus rectangulus, a species of triggerfish.