o ‧ ri ‧ en ‧ teer ‧ ing /ˌɔːriənˈtɪ ə rɪŋ, ˌɒri- $ ˌɔːriənˈtɪr-/ BrE AmE noun [uncountable]
[ Date: 1900-2000 ; Language: Swedish ; Origin: orientering , from orientera 'to orient' ]
a sport in which people have to find their way quickly across an area in the countryside that they do not know, using a map and a ↑ compass