Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun blocker

2 senses of blocker

Sense 1
blocker -- (a football player whose responsibility is to block players attempting to stop an offensive play)
       => football player, footballer -- (an athlete who plays American football)

Sense 2
blocker, blocking agent -- (a class of drugs that inhibit (block) some biological process)
       => medicine, medication, medicament, medicinal drug -- ((medicine) something that treats or prevents or alleviates the symptoms of disease)