beta blockers

/B EY1 T AH0 B L AA0 K ER0 Z/
noun
  1. 1

    A blocking agent, one of a class of drugs used to treat hypertension and control the rate at which the heart beats.

Source: https://en.wiktionary.org/wiki/beta%20blocker, https://en.wiktionary.org/wiki/beta%20blockers