Wordnet 3.0
NOUN (2)
1. 
 a card recording an employee's starting and quitting times each work day; 
2. 
 a card used with a time clock to record an employee's starting and quitting times each day; 
WordNet (r) 3.0 (2006):
timecard
    n 1: a card recording an employee's starting and quitting times
         each work day
    2: a card used with a time clock to record an employee's
       starting and quitting times each day
Moby Thesaurus II by Grady Ward, 1.0:
21 Moby Thesaurus words for "timecard":
   annals, check sheet, chronicle, chronology, clock card, date slip,
   datebook, daybook, diary, journal, log, record, register, registry,
   time book, time chart, time scale, time schedule, time sheet,
   time study, timetable