train-n; 6 Senses

Sense Number 1: a set of connected railroad cars

Commentary: TRAIN[+collection][+artifact][+railcars][+connected]

We had to wait for a slow freight train at the crossing.
Mary took the train to New York.
The trains are on strike today in Italy.

WordNet 3.0 Sense Numbers: 1

Sense Number 2: a sequence of events

Commentary: TRAIN[+event][+collection][+sequenced]

They had a train of disasters at the factory last month.
His train of thought led him to the conclusion that black holes have entropy.
I lost my train of thought when the phone rang.
You may be setting in motion a train of events that will cause harm to the negotiations.

WordNet 3.0 Sense Numbers: 2, 4

Sense Number 3: a moving line of transport animals, a caravan

Commentary: TRAIN[+collection][+animal][+transporting][+moving][+caravan]

They shipped the borax out of the desert by mule train.
Trains of camels and horses carried products of trade all along the ancient Silk Road.
The wagon train formed a circle at night, for protection. (animals pulling wagons)

WordNet 3.0 Sense Numbers: 3

Sense Number 4: a long trailing piece of fabric attached to a gown

Commentary: TRAIN[+entity][+artifact][+fabric][+long][+trailing][+attached][+to_gown]

The bride's gown had a 20-foot train of pure silk.
The princess picked up the train of her gown in one hand and rushed down the stairs.

WordNet 3.0 Sense Numbers: 5

Sense Number 5: set of rotating gears that transmit force

Commentary: TRAIN[+collection][+artifact][+gear][+rotating][+for_transmission][+of_force]

The mechanic examined the machine's train of gears for damage.
The assistant caught his long hair in the gear train.

WordNet 3.0 Sense Numbers: 6

Sense Number 6: a retinue of attendants to an important person

Commentary: TRAIN[+collection][+people][+attendant][+retinue]

The queen was followed by a train of ladies in waiting.
A train of lackeys rushed about, readying the room for the emperor's appearance.

WordNet 0.0 Sense Numbers: 2a