Definition of "Stub" :

noun: the small unused part of something (especially the end of a cigarette that is left after smoking)

noun: the part of a check that is retained as a record

noun: a torn part of a ticket returned to the holder as a receipt

noun: a small piece

"A stub of a pencil."

noun: a short piece remaining on a trunk or stem where a branch is lost

verb: strike (one's toe) accidentally against an object

"She stubbed her toe in the dark and now it's broken."

verb: clear of weeds by uprooting them

"Stub a field."

verb: extinguish by crushing

"Stub out your cigarette now."

verb: pull up (weeds) by their roots