1) AT&T calling plan 2) Phone billing plan 
• (v. t.) To load; to burden.
On'er·ate transitive verb [ imperfect & past participle Onerated ; present participle & verbal noun Onerating .] [ Latin oneratus , past participle pf onerare .] To load; to burden. [ Obsolete] Becon. 
onerate To load, to burden.