Hitting a player 5 times or more in less than 24 hours. (Time and number of hits can change depending on who you hit)
Red tiger pretty much has it right. But in game terms to answer your question, farming is basically repeated or excessive attacks on the same player. Some people call 2 hits farming some call 20. It depends on player. Since you're new, maybe farming you're hearing about is farming inactives. Basically, find about 4 inactives accounts and attack them for cash. More inactive accounts, better chance of them not being dtw(defender to weak)
farming inactives- is hitting an inactive for plunder. Most common technique is to dance twice, regen once, then dance once, regen once and repeat Farming actives- Is hitting a player 5 or more times in a period of 24hours. Some players will consider a single hit farming especially players under 300kcs so be sure to keep you're ready for the pushback. Happy Farming๎