Part of speech:
That which gives notice of danger.
To communicate by means of such devices as lights or signs
To bend the head forward slightly and raise it again quickly, as a sign of greeting, command, acknowledgment, invitation, or, specif., of agreement or assent
To move swiftly and directly (like an arrow)
To indicate or warn of in advance; portend.
To be a sign or indication of; mean
Not varying from a norm; usual.
To direct or aim:
(Nautical, often used attributively) A signal flag.
To call attention to, or give a direction or command to, by a waving motion, as of the hand; to signify by waving; to beckon; to signal; to indicate.
(Proscribed) To introduce a motion in parliamentary procedure.
To serve as a sign, symptom, or token of; signify:
A posted notice bearing a designation, direction, or command:
The definition of alarm is to warn of danger or to make someone afraid or distressed.
To put blinders on.
To have ready for use
(Ecclesiastical) To receive Communion.
To give a cue to; signal or prompt.
To signal with a blaze of light.
The hard durable substance that forms the outer covering of true horns. It consists of keratin.
(Computing) To create a complete backup copy of a file system or other entity.
A sudden flow of electrical current in one direction.
A chemical compound that changes color and structure when exposed to certain conditions and is therefore useful for chemical tests. Litmus, for example, is an indicator that becomes red in the presence of acids and blue in the presence of bases.
To furnish with a lantern.
To send (something) as a message; usually refers to electronic messaging.
To give notice to; inform; announce to
(Computing) To protect with a password.
A type of longitudinal wave that originates as the vibration of a medium (such as a person's vocal cords or a guitar string) and travels through gases, liquids, and elastic solids as variations of pressure and density. The loudness of a sound perceived by the ear depends on the amplitude of the sound wave and is measured in decibels, while its pitch depends on its frequency, measured in hertz.
To cause to sound in short blasts
To produce a clear, shrill, sharp musical sound by passing air over or through an opening:
Wink is defined as to quickly open and close the eyes, especially one eye while keeping the other open.
Something that serves to indicate; a sign:
A signal, often a prearranged one, given secretly, as in warning
Attracting attention; interesting; striking
Strong or pronounced; prominent:
Explicitly characterized by or having a particular linguistic feature. For example, girls is marked for plural in English, whereas sheep is not.
A measurable property of a physical system, such as mass or momentum. In quantum mechanics, observables correspond to mathematical operators used in the calculation of measurable quantities. Operators that do not commute , having a nonzero commutator , correspond to observables that cannot be precisely measured at the same time, such as momentum and position.
Characterized by the use of a pointed crown, as in Gothic architecture:
Most important or notable
Very noticeable or impressive; specif., very attractive in appearance
The definition of gesticulate is to gesture wildly, or to express a point or idea through movement of hands and body.
To point out particularly.
The goods transported or money sent by express
Readily attracting notice
To engage, hire, or order in advance:
The definition of an omen is something that is believed to predict the future.
Strongly marked; distinct:
Find another word for signal. In this page you can discover 75 synonyms, antonyms, idiomatic expressions, and related words for signal, like: beacon, words, nod, arrow, cress, noticeable, outstanding, presage, signify, unexceptional and signaling.