definition of
incidental

[1] #1 incidental n. [incidental expense, minor expense] (frequently plural) an expense not budgeted or not specified; "he requested reimbursement of $7 for incidental expenses". wn

[2] #2 incidental n. an item that is incidental. wn

[3] #3 incidental s. [nonessential] not of prime or central importance; "nonessential to the integral meanings of poetry"- Pubs.MLA. wn

[4] #4 incidental s. [attendant, consequent, accompanying, concomitant, ensuant, resultant, sequent] following or accompanying as a consequence; "an excessive growth of bureaucracy, with attendant problems"; "snags incidental to the changeover in management"; "attendant circumstances"; "the period of tension and consequent need for military preparedness". wn