Sentence:  Keegan , a 6 - <WSD>foot</WSD> - 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 Birds threatened but failed to tally . 
Meaning of the word marked with <WSD> tags:  a linear unit of length equal to 12 inches or a third of a yard