The Collaborative International Dictionary of English v.0.48:

Reap \Reap\ (r[=e]p), v. t. [imp. & p. p. Reaped (r[=e]pt); p.
   pr. & vb. n. Reaping.] [OE. repen, AS. r[imac]pan to seize,
   reap; cf. D. rapen to glean, reap, G. raufen to pluck, Goth.
   raupjan, or E. ripe.]
   1. To cut with a sickle, scythe, or reaping machine, as
      grain; to gather, as a harvest, by cutting.
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            When ye reap the harvest of your land, thou shalt
            not wholly reap the corners of thy field. --Lev.
                                                  xix. 9.
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   2. To gather; to obtain; to receive as a reward or harvest,
      or as the fruit of labor or of works; -- in a good or a
      bad sense; as, to reap a benefit from exertions.
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            Why do I humble thus myself, and, suing
            For peace, reap nothing but repulse and hate?
                                                  --Milton.
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   3. To clear of a crop by reaping; as, to reap a field.
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   4. To deprive of the beard; to shave. [R.] --Shak.
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   Reaping hook, an implement having a hook-shaped blade, used
      in reaping; a sickle; -- in a specific sense,
      distinguished from a sickle by a blade keen instead of
      serrated.
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WordNet (r) 3.0 (2006):

reaping hook
    n 1: an edge tool for cutting grass or crops; has a curved blade
         and a short handle [syn: sickle, reaping hook, reap
         hook]