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