An Etymological Dictionary of Astronomy and Astrophysics

1. Any of various records, made in rough or finished form, concerning a trip made by a ship or aircraft and dealing with particulars of navigation, weather, engine performance, discipline, and other pertinent details; → logbook.
   

   2. To enter in a log; compile; amass; keep a record of (Dictionary.com).

Etymology (EN): M.E. logge, variant of lugge “pole, limb of tree; piece of wood,” of unknown origin, back formation from logbook, a book used by sailors to record the speed measurements made by means of a chip of a tree log on the end of a reeled log line.

Etymology (PE): 1) Log, loan from E., as above.

2. Logidan, infinitive from log.