Definition of lasts:
(adj) :
Final, ultimate, coming after all others of its kind.
(adj) :
Most recent, latest, last so far.
(adj) :
Farthest of all from a given quality, character, or condition; most unlikely, or least preferable.
(adj) :
Being the only one remaining of its class.
(adj) :
Supreme; highest in degree; utmost.
(adj) :
Lowest in rank or degree.