Pronunciation: (fal'us),[key] —n., —pl.phal•liPronunciation: (fal'ī),[key]phal•lus•es. 1. an image of the male reproductive organ, esp. that carried in procession in ancient festivals of Dionysus, or Bacchus, symbolizing the generative power in nature.
2. Anat.the penis, the clitoris, or the sexually undifferentiated embryonic organ out of which either of these develops.