The Collaborative International Dictionary of English v.0.48:

Log \Log\, v. t. [imp. & p. p. Logged; p. pr. & vb. n.
   Logging.]
   1. (Naut.), To enter in a ship's log book; as, to log the
      miles run. --J. F. Cooper.
      [1913 Webster]

   2. To record any event in a logbook, especially an event
      relating to the operation of a machine or device.
      [PJC]

The Collaborative International Dictionary of English v.0.48:

Logging \Log"ging\, n.
   The business of felling trees, cutting them into logs, and
   transporting the logs to sawmills or to market.
   [1913 Webster]

WordNet (r) 3.0 (2006):

logging
    n 1: the work of cutting down trees for timber

Moby Thesaurus II by Grady Ward, 1.0:

34 Moby Thesaurus words for "logging":
   Christmas tree farming, afforestation, arboriculture, booking,
   cataloging, chronicling, enlistment, enrollment, entering, entry,
   forest management, forestation, forestry, impanelment, indexing,
   inscribing, inscription, insertion, inventorying, listing,
   lumbering, matriculation, posting, record keeping, recordation,
   recording, reforestation, register, registration, registry,
   silviculture, tabulation, tree farming, woodcraft