new blood
Additional, fresh individuals regarded as an invigorating force, as in an organization. For example, The board could really use some new blood next year. This metaphoric expression, first recorded in 1853, alludes to a blood transfusion and employs new in the sense of "fresh."
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| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |
| an extraordinary or unusual thing, person, or event; an exceptional example or instance. |