basic training or instruction in a subject

every child needs a good grounding in science and technology

prohibit or prevent (a pilot or an aircraft) from flying

a bitter wind blew from the north-east and the bombers were grounded

(with reference to a ship) run or go aground

rather than be blown up, Muller grounded his ship on a coral reef

give (something abstract) a firm theoretical or practical basis

the study of history must be grounded in a thorough knowledge of the past

place (something) on the ground or touch the ground with (something)

he was penalized two strokes for grounding his club in a bunker

connect (an electrical device) with the ground

(of a batter) hit a pitched ball so that it bounces on the ground

he grounded to second