green ‧ horn /ˈɡriːnhɔːn $ -hɔːrn/ BrE AmE noun [countable] informal especially American English
[ Date: 1600-1700 ; Origin: greenhorn 'animal with young horns' (1400-1500) ]
someone who lacks experience of something
green ‧ horn /ˈɡriːnhɔːn $ -hɔːrn/ BrE AmE noun [countable] informal especially American English
[ Date: 1600-1700 ; Origin: greenhorn 'animal with young horns' (1400-1500) ]
someone who lacks experience of something
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012