Tear
A tear was a drop of biological lubricant to clean and water the eye. Production and release of tears might also denote an emotional expression of sadness or overwhelming joy, such as in the act of crying.

In 2237, when young Spock was on the verge of tears as I-Chaya lay dying, Selek counseled him, saying, "A Vulcan would face such a loss without tears". ()

Counselor Deanna Troi lost some tears when she was overwhelmed by the emotions of the space vessel lifeform encountered on Deneb IV. ()

When Natasha Yar lost some tears due to being placed in the penalty box by Q, Captain Picard told her that there was a new ship's standing order on the bridge allowing her to cry when she was in the penalty box. ()

Tear was one of the words appearing in a detective novel Data was reading in early 2364 to become more prepared for a Dixon Hill adventure. ()

In 2366, Sarek cried one tear at a concert, much to Jean-Luc Picard's amazement. ()

Luisa Kim was crying and losing tears following the events of Arthur Malencon's death but was solaced by Commander William T. Riker. ()

A dabo girl was using a handkerchief to wipe away some tears during the funeral of Morn. ()

See also 
 Elasian tears

External link 
 
Biochemical compounds