n.an apparatus for visual signaling with lights or mechanically moving arms

v.

send signals by or as if by semaphore

convey by semaphore, of information

Efficient mechanism for preventing starvation in counting semaphores
Run-time detection of potential deadlocks for programs with locks, semaphores, and condition variables
Detecting Race Conditions in Parallel Programs that Use Semaphores
An efficient solution to the mutual exclusion problem using weak semaphores ☆
Low contention semaphores and ready lists
Limitations of Dijkstra's Semaphore Primitives and Petri nets
Permission accounting in separation logic
Synchronization, coherence, and event ordering in multiprocessors
The structure of the ’THE’-multiprogramming system
An overview of the SR language and implementation