Definition of "Trail" :

noun: a path or track roughly blazed through wild or hilly country

noun: evidence pointing to a possible solution

"The trail led straight to the perpetrator."

noun: a track or mark left by something that has passed

"There as a trail of blood."

verb: drag loosely along a surface; allow to sweep the ground

"The toddler was trailing his pants."

verb: hang down so as to drag along the ground

"The bride's veiled trailed along the ground."

verb: go after with the intent to catch

verb: to lag or linger behind

verb: move, proceed, or walk draggingly or slowly

"John trailed behind his class mates."