A post or buoy placed over a shoal or bank to warn vessels of danger; also a signal mark on land. (FM 55-501)
That which gives notice of danger, or keeps people on the correct path.
An electronic device that broadcasts a signal to nearby portable devices, enabling smartphones etc. to perform actions when in physical proximity to the beacon.
A signal fire to notify of the approach of an enemy, or to give any notice, commonly of warning.
A high hill or other easily distinguishable object near the shore which can serve as guidance for seafarers.
A signal or conspicuous mark erected on an eminence near the shore, or moored in shoal water, as a guide to mariners.
To furnish with a beacon or beacons.
To act as a beacon.
To give light to, as a beacon; to light up; to illumine.
A pointer or index that indicates something.
Any of many substances, such as litmus, used to indicate the concentration of a substance, or the degree of a reaction.
The needle or dial on such a meter.
A plant or animal whose presence is indicative of some specific environment.
A turn signal; each of the flashing lights on each side of a vehicle which indicate a turn is being made to left or right, or a lane change etc.
A measure, such as unemployment rate, which can be used to predict economic trends.
A bird, the honeyguide.
A meter or gauge.