The Proto-Indo-European word *plehₐk/g-
Word *plehₐk/g-
Meaning to strike, to strike ones breasts
Synonyms *bʰlaĝ-, *bʰlihₓĝ-, *gʷel-, *gʷhen-, *wel(h₂)-, *kelh₁-

Comments
Mallory J.P. and Adams D. (2006)

Other words that might be of interest
*pleh₂k- ‘to hit’