Definify.com
Webster 1913 Edition
Lin
Lin
,Noun.
 [Ir. 
linn
, or Gael. linne
; akin to W. llyn 
a pool, pond, lake, but in senses 2 and 3 prob. from AS. hlynn 
torrent. Cf. Dunlin
.] 1. 
A pool or collection of water, particularly one above or below a fall of water. 
2. 
A waterfall, or cataract; 
as, a roaring 
. lin
3. 
A steep ravine. 
☞ Written also linn and lyn. 
Webster 1828 Edition
Lin
LIN
,Verb.
I.
  LIN
,Noun.