daisybush \ˈ ̷ ̷ ̷ ̷ˌ ̷ ̷\noun : any of certain frost-tender shrubs of the Australasian composite genus Olearia with leathery evergreen leaves and flower heads resembling daisies; especially: a bushy half-hardy New Zealand shrub (O. haastii) sometimes cultivated for its fragrant white flower heads