'Initiate tenant by courtesy' definitions:

Definition of 'Initiate tenant by courtesy'

From: GCIDE

Initiate \In*i"ti*ate\, a. [L. initiatus, p. p.] [1913 Webster]
1. Unpracticed; untried; new. [Obs.] "The initiate fear that wants hard use." --Shak. [1913 Webster]
2. Begun; commenced; introduced to, or instructed in, the rudiments; newly admitted. [1913 Webster]
To rise in science as in bliss, Initiate in the secrets of the skies. --Young. [1913 Webster]
Initiate tenant by courtesy (Law), said of a husband who becomes such in his wife's estate of inheritance by the birth of a child, but whose estate is not consummated till the death of the wife. --Mozley & W. [1913 Webster]