The Collaborative International Dictionary of English v.0.48:

martel \mar"tel\, v. i. [F. marteler, fr. martel, marteau,
   hammer, a dim. fr. L. martulus, marculus, dim. of marcus
   hammer. Cf. March to step.]
   To make a blow with, or as with, a hammer. [Obs.] --Spenser.
   [1913 Webster]