To give individual quality to; to modulate; to vary; to regulate.
To certify or license someone for something.
To throw and catch each object at least twice.
To compete successfully in some stage of a competition and become eligible for the next stage.
To make someone, or to become competent or eligible for some position or task.
To modify, limit, restrict or moderate something; especially to add conditions or requirements for an assertion to be true.
To describe or characterize something by listing its qualities.
An instance of throwing and catching each prop at least twice.
To strengthen; to confirm.
To become thicker (in the sense of wider).
To become thicker (in the sense of more viscous).
To make thicker (in the sense of more viscous).
To make thicker (in the sense of wider).
To make more frequent.