Sentence:  Fly ! Fly ! avaunt with that base cowardly gibbrish ; That <WSD>Algebra</WSD> of honour ; which had never Been nam'd, if all had equal courage—what? 
Meaning of the word marked with <WSD> tags:  A system or process, that is like algebra by substituting one thing for another, or in using signs, symbols, etc., to represent concepts or ideas.