CPA Matt23:7 :ܕܝܗܘܢ ܡܬܩܪ̈ܝܢ ܡܢ ܒܢܝ̈ܢܫܐ ܪܒܝ ܪܒܝ‏ : that they may be called "rabbi, rabbi" by people
See the entire entry for raḇ, rabbā n.m. chief; teacher