Ango

An 安居, or kessei(結制), is a Japanese term for a three-month period of intense training for students of Zen Buddhism, lasting anywhere from 90 to 100 days. The practice during ango consists of meditation (zazen), study, and work (samu(作務)). Ango is typically held twice a year, the first period from spring to summer and the second period ...
Found on http://en.wikipedia.org/wiki/Ango

ango

90 to 100 day summer training period for monks
Found on http://www.encyclo.co.uk/local/20455
No exact match found