avail
1. avail \*-'va-(*)l\ vb [ME availen, prob. fr. a- (as in abaten to abate)
+ vailen] to avail : to be of use or advantage : SERVE : to be of use or
advantage to : PROFIT : to make use of - avail of
2. avail n 1: advantage toward attainment of a goal or purpose : USE
{effort was of little ~} pl, archaic 2: profits or proceeds esp. from a
business or from the sale of property
Webster's English Dictionary