trace-n; 6 Senses

Sense Number 1: a small amount of quantity of something

Commentary: TRACE[+quantity][+amount][+approximate][+small][+hint]

Traces of lead and other heavy metals were found in the town's drinking water.
This sauce has just a trace of cumin in it.
There are still traces of radioactive particles at the old nuclear test site.
A trace of her perfume lingered in the air after she had gone.

WordNet 3.0 Sense Numbers: 1

Sense Number 2: data which is an indication or evidence for something

Commentary: TRACE[+information][+data][+indication][+small]

The bloodhounds followed the fugitive by the trace of his scent.
The ancient city vanished without a trace beneath tons of volcanic ash.
There was no trace of sarcasm in John's praise of Mary's achievement.
Just the trace of a smile crossed her lips when she mentioned his name.

WordNet 3.0 Sense Numbers: 2, 3

Sense Number 3: a drawing obtained by copying the outline of an original

Commentary: TRACE[+artifact][+drawing][+copy][+outlined][+from_original]

Jane made a trace of the Italian fashion pattern.
These traces are of 19th-century fabric designs that I copied from an old book onto semi-transparent paper.

WordNet 3.0 Sense Numbers: 4

Sense Number 4: a procedure to investigate the source of something

Commentary: TRACE[+process][+investigation][+of_source][+of_phenomenon]

The FBI was able to put a trace on the call.
Their trace of the computer bug led to some code John compiled into the system last week.
The doctor detected no abnormalities in the patient's GI tract, after examining it through a radioactive trace.

WordNet 0.0 Sense Numbers: 1c

Sense Number 5: sum of elements on the principle diagonal of a square matrix

Commentary: TRACE[+quantity][+sum][+element][+of_diagonal][+principle][+of_square_matrix]

Calculate the trace of the following 3-by-3 matrix.

WordNet 0.0 Sense Numbers: 4

Sense Number 6: a line connecting a harness to a wagon

Commentary: TRACE[+artifact][+line][+connector][+of_harness][+to_wagon]

The leather traces on the mule team's harness looked worn.

WordNet 3.0 Sense Numbers: 5