Sentence:  And then after an <WSD>abnormal</WSD> meal, which was either a very late breakfast or a very early lunch, they drove on to Victoria Station. 
Meaning of the word marked with <WSD> tags:  Not conforming to rule or system; deviating from the usual or normal type. (First attested around the mid 19th century.)<ref name=SOED>(page=6)</ref>