さおだち
bolting upright; rearing up (horse)
Also written 竿立ち、さお立ち
Noun, Suru verb, Intransitive
棹立さおだちした栗毛くりげの牝馬ひんばは嘶いななき、騎手きしゅを落おとそうとした。
The prancing chestnut mare whinnied as she tried to get rid of the rider.