Search Result for "subbing": 
Wordnet 3.0

NOUN (1)

1. working as a substitute for someone who is ill or on leave of absence;
[syn: subbing, substituting]



WordNet (r) 3.0 (2006):

subbing
    n 1: working as a substitute for someone who is ill or on leave
         of absence [syn: subbing, substituting]