Correct spelling for the English word "trower" is [tɹˈa͡ʊə], [tɹˈaʊə], [t_ɹ_ˈaʊ_ə] (IPA phonetic alphabet).
The word "trower" is derived from the Old English word "trowere", which meant "one who throws". It is related to the verb "trow" or "throw", which has its roots in Germanic languages. The Old English word evolved into "trower" in Middle English and has persisted with modifications to its spelling over time.