This is the 4362nd most frequent Japanese word.
厩
Stable; barn.
Here, '厩' refers directly to a physical stable, a place where horses are kept and cared for.
厩で、馬の世話をしました。
At the stable, I took care of the horses.
In this context, '厩' is used to represent a newly constructed facility for housing horses on a farm.
その農場では厩が新しく建設されました。
A new stable was constructed at the farm.
'厩' here signifies the stables as they relate to the person's task or job involving their upkeep and cleanliness.