Strong's #4712: metsar (pronounced may-tsar')
 from 6896; something tight, i.e. (figuratively) trouble:--distress, pain, strait.
Brown-Driver-Briggs Hebrew Lexicon:
 
  mêtsar 
 
 1) straits, distress
 
  Part of Speech: noun masculine
Relation: from H6896
Usage:
This word is used 3 times:
Psalms 116:3: "The sorrows of death compassed  me, and the pains of hell got hold upon me: I found trouble"
Psalms 118:5: "I called upon the LORD in  distress: the LORD answered me, and set me in a large place."
Lamentations 1:3: "rest: all her persecutors overtook her between  the straits."