Definition of trail for Students. 1  1 : a trace or mark left by something that has passed or been drawn along The dog left a trail of mud on the carpet. 2  2 : a beaten path. 3  3 : a path marked through a forest or mountainous region hiking trails.
The letter E. It is in the word 'week' twice, the word 'year' once and it's not in the word 'day.'.he letter E. The full question may have originally been: What will occur once in a year, twice in every month, 4 times in every week and 6 times each and every weekend?
So twice daily is every 12 hours, thrice daily is every 8 hours, four times is every 6 hours and so on and so forth. However for most medication one should not obsess to be precisely on the dot. you may take the medication even if you are off by say an hour or so.