semaphore

Inflections of 'semaphore' (v): (⇒ conjugate)

sem•a•phore n., v., -phored, -phor•ing.
n.

Telecommunications[uncountable] a system of signaling, esp. one by which a flag is held in each hand and various positions of the arms indicate specific letters, etc.
[countable] an apparatus used in this system.

Telecommunicationsto signal by semaphore: [~ + object]to semaphore a message.[no object]busily semaphoring to the other ship.

sem•a•phore n., v., -phored, -phor•ing.
n.

Telecommunicationsan apparatus for conveying information by means of visual signals, as a light whose position may be changed.
Telecommunicationsany of various devices for signaling by changing the position of a light, flag, etc.
Telecommunicationsa system of signaling, esp. a system by which a special flag is held in each hand and various positions of the arms indicate specific letters, numbers, etc.

v.t., v.i.

sem•a•phor•ic sem′a•phor′i•cal, adj. sem′a•phor′i•cal•ly, adv.

Collins Concise English Dictionary © HarperCollins Publishers::

semaphore /ˈsɛməˌfɔː/ n

an apparatus for conveying information by means of visual signals, as with movable arms or railway signals, flags, etc
a system of signalling by holding a flag in each hand and moving the arms to designated positions to denote each letter of the alphabet

Etymology: 19th Century: via French, from Greek sēma a signal + -phoresemaphoric /ˌsɛməˈfɒrɪk/, ˌsemaˈphorical adj

'semaphore' also found in these entries (note: many are not synonyms or translations):

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