Definify.com
Webster 1913 Edition
Forelock
Fore′lockˊ
,Noun.
 1. 
The lock of hair that grows from the forepart of the head. 
2. 
(Mech.) 
A cotter or split pin, as in a slot in a bolt, to prevent retraction; a linchpin; a pin fastening the cap-square of a gun. 
Forelock bolt
, a bolt retained by a key, gib, or cotter passing through a slot. 
– Forelock hook 
(Rope Making)
, a winch or whirl by which a bunch of three yarns is twisted into a standard. 
Knight. 
– To take time by the forelock 
or To take occasion by the forelock
to make prompt use of anything; not to let slip an opportunity.
 Time is painted with a lock before and bald behind, signifying thereby that we must 
take time by the forelock
; for when it is once past, there is no recalling it. Swift.
On 
occasion’s forelock 
watchful wait. Milton.
Webster 1828 Edition
Forelock
FO'RELOCK
, n.1.
  The lock or hair that grows from the forepart of the head.Take time by the forelock.
2.
  In sea language, a little flat pointed wedge of iron, used at the end of a bolt, to retain it firmly in its place.Definition 2025
forelock
forelock
English
Noun
forelock (plural forelocks)
-  The part of a person's hairstyle which covers the forehead.
-  1674, John Milton, Paradise Lost, Book IV, lines 300-303, 
- His fair large front and eye sublime declared / Absolute rule; and hyacinthine locks / Round from his parted forelock manly hung / Clustering, but not beneath his shoulders broad:
 
 -  1734, The Koran: Commonly Called the Alkoran of Mohammed, translated by George Sale, Sura 96, Congealed Blood, 
- Doth he not know that GOD seeth? / Assuredly. Verily, if he forbear not, we will drag him by the forelock, / the lying, sinful forelock. / And let him call his council to assistance: / we also will call the infernal guards to cast him into ****.
 
 -  1896, A. E. Housman, A Shropshire Lad, XXXVIII, 
- Warm with the blood of lads I know / Comes east the sighing air. / / It fanned their temples, filled their lungs, / Scattered their forelocks free;
 
 -  1978, Edmund White, Nocturnes for the King of Naples, New York: St. Martin's Press, Chapter VIII, p. 135, 
- This little boy, still flicking his head to one side between sentences though the long blond forelock that once excused the tic had been cut […]
 
 
 -  1674, John Milton, Paradise Lost, Book IV, lines 300-303, 
 -  The part of a horse's (or similar animal's) mane that lies on its forehead.
-  1898, Ivan Turgenev, in A Lear of the Steppes and Other Stories, translated by Constance Garnett, New York: Macmillan: 1898, p. 146, 
- […] the gates themselves slowly parted, there appeared a large horse's head, with a plaited forelock under a decorated yoke, and slowly there rolled into the road a small cart, like those driven by horse-dealers, and higglers.
 
 -  1945, George Orwell, Animal Farm, Chapter 5, 
- Even Boxer was vaguely troubled. He set his ears back, shook his forelock several times, and tried hard to marshal his thoughts; but in the end he could not think of anything to say.
 
 
 -  1898, Ivan Turgenev, in A Lear of the Steppes and Other Stories, translated by Constance Garnett, New York: Macmillan: 1898, p. 146, 
 - A wedge pushed through a hole at the end of a bolt to hold it in place.
 
Derived terms
Synonyms
Translations
Verb
forelock (third-person singular simple present forelocks, present participle forelocking, simple past and past participle forelocked)
-  To fix in place with a forelock (wedge)
-  1835, James Fenimore Cooper, The Monikins, Chapter 14, 
- At one extremity each pair was firmly connected by a short, massive, iron link, of about two feet in length; and, at its opposite end, a large eye-bolt was driven into each stick, where it was securely forelocked.
 
 
 -  1835, James Fenimore Cooper, The Monikins, Chapter 14,