Search Result for "loop-line": 
Wordnet 3.0

NOUN (1)

1. a railway branch line that branches from the trunk line and then rejoins it later on; 



The Collaborative International Dictionary of English v.0.48:

loop-line \loop-line\ n.
   a railway line that branches from the trunk line and then
   rejoins it at another point.
   [WordNet 1.5]


WordNet (r) 3.0 (2006):

loop-line
    n 1: a railway branch line that branches from the trunk line and
         then rejoins it later on