
any of about seven species of ornamental trees constituting the genus Ostrya of the birch family (Betulaceae), native to Eurasia and North America. ...
Found on
http://www.britannica.com/eb/a-z/h/68

(Ostrya) These hardy, deciduous trees are natives of Europe, North America and Asia. These slow growing, pest-resistant trees grow up to 40 feet high with a spread to match. Their trunks are short and are covered with scaling bark. They are topped by a dense crown of ovate or oblong-ovate leaves that taper into a point. The leaves are marked with c...
Found on
http://www.encyclo.co.uk/local/10004

[
n] - any of several trees resembling hornbeams with fruiting clusters resembling hops
Found on
http://www.webdictionary.co.uk/definition.php?query=hop%20hornbeam

any of several Eurasian and North American trees of the genus Ostrya, of the birch family, esp. O. virginiana, bearing hoplike fruiting clusters.
Found on
https://www.infoplease.com/dictionary/hop-hornbeam
No exact match found.