Jack-A-Lynn lyrics

Cold aeroplanes, slow boats, warm trains
remind me of Jack-A-Lynn.
Lush hotels and pretty girls
won't cheer the misty mood I'm in.
Silly, sad - I've never had to write this before
oh, Jack-A-Lynn.
Funny how long nights allow
thoughts of Jack-A-Lynn.
When phantoms tread around my bed
to offer restless dreams they bring.
And it's just the time and place to find
a sad song to play
for Jack-A-Lynn.

Magpies that shriek, old boots that leak
call me to Jack-A-Lynn.
Coal-black cats in policeman's hats
nosing where the mice have been.
And the long miaow's beginning now
and I'm far, far from home
and Jack-A-Lynn.

Submitted by Guest

What do you think is the meaning of Jack-A-Lynn by Jethro Tull?