Sentence:  Keegan , a 6 - foot - 3 - inch 158 - pounder , gave up the Orioles ' last two safeties over the final three frames , escaping a load of trouble in the ninth when the <WSD>Birds</WSD> threatened but failed to tally . 
Meaning of the word marked with <WSD> tags:  any number of entities (members) considered as a unit