|1.||[ adjective ] done or occurring in a brief period of time|
"a rapid rise through the ranks"
|2.||[ adjective ] characterized by speed; moving with or capable of moving with high speed|
"a rapid movement" "a speedy car" "a speedy errand boy"
|3.||[ noun ] (nautical,geography) a part of a river where the current is very fast|
|Related terms:||waterway river|