Entry 1 sense Webster, 1913 Caber /(kā"bẽr)/ · Ca·ber · IPA /ˈkeɪbɚ/ 01 n. A pole or beam, esp. one used in Gaelic games for tossing as a trial of strength. 1. A pole or beam, esp. one used in Gaelic games for tossing as a trial of strength.