The Collaborative International Dictionary of English v.0.48:

Swat \Swat\ (sw[o^]t), n. [Also spelled swot.]
   1. a sharp blow, especially one made with an instrument in
      the hand.

   2. (Baseball) a powerful hit, especially a home run.

WordNet (r) 3.0 (2006):

swot
    n 1: an insignificant student who is ridiculed as being affected
         or boringly studious [syn: swot, grind, nerd, wonk,
         dweeb]
    v 1: study intensively, as before an exam; "I had to bone up on
         my Latin verbs before the final exam" [syn: cram, grind
         away, drum, bone up, swot, get up, mug up, swot
         up, bone]

Moby Thesaurus II by Grady Ward, 1.0:

45 Moby Thesaurus words for "swot":
   beast of burden, bone, commit to memory, con, contemplate, dig,
   drill, drudge, elucubrate, examine, fag, galley slave,
   get by heart, get letter-perfect, go over, greasy grind, grind,
   grub, hack, have by heart, know by heart, learn by heart,
   learn verbatim, lucubrate, memorize, parrot, peruse, plodder,
   plunge into, pore over, practice, read, recite, regard studiously,
   repeat, repeat by heart, restudy, review, slave, slogger, study,
   swot up, vet, wade through, workhorse