1. Deserted; destitute; stripped or deprived; forsaken. Hence, lost; helpless; wretched; solitary.
Of fortune and of hope at once forlorn
To live again in these wild woods forlorn
For here forlorn and lost I tread.
2. Taken away. obsolete
When as night hath us of light forlorn
3. Small; despicable; in a ludicrous sense.
FORLORN hope, properly, a desperate case; hence in military affairs, a detachment of men appointed to lead in an assault, to storm a counterscarp, enter a breach, or perform other service attended with uncommon peril.
FORLORN', noun A lost, forsaken, solitary person.