to toy with one’s food

toyboy

to trace back to the fact

to track down

trade secret

A trade in hand finds gold in every land

trade with England

to trade insults

traffic congestion

Traffic jam

traffic circle

It is a tragedy.

a tragic occurrence

trail of smoke

to trail one’s coat-tails

trailblazer

train driver

My train leaves in an hour.

I'm on a train.

My train is leaving in five minutes and I have to skedaddle

A train ran off the rails

train of thoughts

to go by train

to train as a teacher

I'm a trainee accountant.