'Preceptor' definitions:

Definition of 'preceptor'

noun

Teacher at a university or college (especially at Cambridge or Oxford) [syn: preceptor, don]

From: GCIDE

Preceptor \Pre*cep"tor\, n. [L. praeceptor, fr. praecipere to teach: cf. F. pr['e]cepteur. See Precept.]
1. One who gives commands, or makes rules; specifically, the master or principal of a school; a teacher; an instructor. [1913 Webster]
2. The head of a preceptory among the Knights Templars. --Sir W. Scott. [1913 Webster]