Definition of "collegian"
A student (or a former student) of a college
Quotations
She then remembered that her own early bearing towards him had been haughty, and indifferent; that she had sneered at the young collegian's shyness; and now thought with "the late remorse of love," how unlike to this had been Ethel's gentle kindness.
1837, L[etitia] E[lizabeth] L[andon], “Anticipation”, in Ethel Churchill: Or, The Two Brides. […], volume I, London: Henry Colburn, […], page 42
adjective
comparative more collegian, superlative most collegian