[1] : The Collaborative International Dictionary of English v.0.48

praying \pray"ing\,
   a.  n. from pray, v.
   1913 webster

   praying insect, praying locust, or praying mantis
      zool., a mantis, especially mantis religiosa. see
      mantis.

   praying machine, or praying wheel, a wheel on which
      prayers are pasted by buddhist priests, who then put the
      wheel in rapid revolution. each turn in supposed to have
      the efficacy of an oral repetition of all the prayers on
      the wheel. sometimes it is moved by a stream.
      1913 webster
see also:
pray praying insect praying locust praying mantis mantis religiosa mantis 
praying machine praying wheel 

Mantis >> M Words
Mantis, definition of term: Mantis
mantis_pag1.html

Praying Mantis >> P Words
Praying Mantis, definition of term: Praying Mantis
praying+mantis_pag1.html