Semaphore

Pronunciation:

UK: /ˈseməfɔː(r)/ [সেমাফো্(র)]

US: /ˈseməfɔːr/ [সেমাফো্(র)]

semaphor seashore metaphore semaphored semaphores semaphoric spermaphore some other samir some more

signal mutex lighting light spinlock wigwag synchronization heliograph interprocess signalling