A period of 40 weekdays from Ash Wednesday to Holy Saturday WordNet 3.0 & Open English WordNet

Lent is the solemn Christian religious observance in the liturgical year commemorating the 40 days Jesus Christ spent fasting in the desert and enduring temptation by Satan, according to the Gospels of Matthew, Mark and Luke, before beginning his public ministry. Wikipedia

The Christian period of fasting, prayer and almsgiving Wikipedia Disambiguation

Penitential season in preparation for the observance of Easter Wikidata

Period of penitence for Christians before Easter. OmegaWiki

The 40 days preceding Lazarus Saturday, the Saturday preceding Holy Week. Wiktionary