What is "to listen after"

Listen \Lis"ten\ (l[i^]s"'n), v. i. [imp. & p. p. Listened (l[i^]s"'nd); p. pr. & vb. n. Listening.] [OE. listnen, listen, lustnen, lusten, AS. hlystan; akin to hlyst hearing, OS. hlust, Icel. hlusta to listen, hlust ear, AS. hlosnian to wait in suspense, OHG. hlos[=e]n to listen, Gr. kly`ein, and E. loud. [root]4

1. See Loud, and cf. List to listen.] 1. To give close attention with the purpose of hearing; to give ear; to hearken; to attend.

   When we have occasion to listen, and give a more particular attention to some sound, the tympanum is drawn to a more than ordinary tension.
   --Holder.

2. To give heed; to yield to advice; to follow admonition; to obey.

   Listen to me, and by me be ruled.
   --Tennyson.

   To listen after, to take an interest in. [Obs.]

   Soldiers note forts, armories, and magazines; scholars listen after libraries, disputations, and professors.
   --Fuller.

   Syn: To attend; hearken. See Attend.