The term 'SONNETEER's Contraction' is a combination of two words, 'EER' and 'TIS'. EER is an abbreviation for the word 'ENGINEER', which is a person who designs, builds, or maintains engines, machines, or public works. TIS is an abbreviation for the word 'tis', which is a contraction of the phrase 'it is'. Together, these two words form the phrase 'SONNETEER's Contraction', which is used to describe a poetic device used by sonneteers to shorten a line of poetry.