Sentence:  After years of digging , nights and <WSD>weekends</WSD> , he put together the big , profusely illustrated book , Of Garryowen and Glory , which is probably the most complete history of any military unit . 
Meaning of the word marked with <WSD> tags:  a time period usually extending from Friday night through Sunday; more loosely defined as any period of successive days including one and only one Sunday