01 n. The lock of hair that grows from the forepart of the head.
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1.
The lock of hair that grows from the forepart of the head.
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2.
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.(Mech.)“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.
Phrases & compounds
Forelock bolt —
a bolt retained by a key, gib, or cotter passing through a slot.
Forelock hook —
a winch or whirl by which a bunch of three yarns is twisted into a standard.
To take time by the forelock —
to make prompt use of anything; not to let slip an opportunity.