Wordnet 3.0
ADJECTIVE (1)
1. 
 used of the third or next to final year in United States high school or college; 
- Example: "the junior class"- Example: "a third-year student"[syn: junior(a), third-year, next-to-last]
WordNet (r) 3.0 (2006):
third-year
    adj 1: used of the third or next to final year in United States
           high school or college; "the junior class"; "a third-year
           student" [syn: junior(a), third-year, next-to-last]