Head"long` (?; 115), adv. [OE. hedling, hevedlynge; prob. confused with E. long, a. & adv.]
1.
With the head foremost; as, to fall headlong.
Acts i. 18.
2.
Rashly; precipitately; without deliberation.
3.
Hastily; without delay or respite.
© Webster 1913.
Head"long, a.
1.
Rash; precipitate; as, headlong folly.
2.
Steep; precipitous.
[Poetic]
Like a tower upon a headlong rock.
Byron.
© Webster 1913.