knock on

transitive verb

Definition of knock on

: to knock onward : knock forward; specifically : to knock (the ball in rugby) forward in the direction of the opponents' dead-ball line with the hand or arm

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knock-on

noun

Definition of knock-on

plural knock-ons

: the action of knocking on

Origin and Etymology of knock-on

knock on

knock-on

adjective \ " \

Definition of knock-on

: produced or projected as a result of the collision of an energetic particle (as a neutron or fission fragment) from outside an atom with an elementary particle inside