Definition of: concern

(kən·sûrn′) v.t.
1. To relate or belong to; be of interest or importance to.
2. To occupy, engage, or interest.
3. To affect with solicitude; trouble: usually in the passive.
—v.i.
4. Obs. To be of importance.
—noun
1. That which concerns one; something affecting one's interest or welfare; affair; business.
2. Solicitude; interest.
3. Relation; reference.
4. A business establishment.
5. Colloq. Any object or contrivance. See synonyms under ANXIETY, BUSINESS, CARE. [<MF concerner <Med. L concernere regard <com- thoroughly + cernere see, discern]