ranger-n; 4 Senses

Sense Number 1: mounted law officers who patrol rural areas

Commentary: RANGER[+person][+lawman][+mounted] [+role][+patroller][+law][+mounted]

The outlaw was hung for shooting a local ranger.
The town organized rangers to hunt down the cattle rustlers.
The man in the black stetson riding the chestnut stallion is the deputy ranger.
Rangers were sometimes the only law available to small western towns.

WordNet 3.0 Sense Numbers: 1

Sense Number 2: official caretaker of public forests and parks

Commentary: RANGER[+person][+official][+park][+public] [+role][+caretaker][+land][+public][+forest/+park]

The park rangers have closed two camp sites because of fire hazard.
John's brother is a forest ranger in Idaho.

WordNet 3.0 Sense Numbers: 2

Sense Number 3: a soldier trained in special tactics, commando

Commentary: RANGER[+person][+military][+infantry][+specialized]

Small bands of rangers were sent in ahead of the regular army.
These rangers are trained to parachute behind enemy lines and do reconnaissance.
Bob served as a ranger for the U.S. army in Afghanistan.

WordNet 3.0 Sense Numbers: 3

Sense Number 4: person or animal that travels or ranges across territory

Commentary: RANGER[+individual][+wanderer][+human/+animal]

He was a ranger throughout his twenties, knocking about from city to city doing odd jobs.
The largest rangers in this chain of mountains include big-horned sheep and grizzly bears.

WordNet 0.0 Sense Numbers: 3