NOUN (1)

1. a swimming stroke; the arms are extended together in front of the head and swept back on either side accompanied by a frog kick;


VERB (1)

1. swim with the face down and extend the arms forward and outward while kicking with the leg;

WordNet (r) 3.0 (2006):

breaststroke
    n 1: a swimming stroke; the arms are extended together in front
         of the head and swept back on either side accompanied by a
         frog kick
    v 1: swim with the face down and extend the arms forward and
         outward while kicking with the leg