From Longman Dictionary of Contemporary Englishelevensese‧lev‧en‧ses /ɪˈlevənzɪz/ noun [uncountable] British English old-fashioned DFa cup of coffee or tea and a biscuit, that you have in the middle of the morning
Examples from the Corpus
elevenses• The horseman threw a couple of sacks over the backs of his horses and sat under the hedge to eat his elevenses.• Sykes was dangling a small bough over its nose, possibly an olive branch, perhaps its elevenses. 