How to pronounce y in English

"Y the twenty-fifth letter of the English alphabet at the beginning of a word or syllable except when a prefix (see Y-) is usually a fricative vocal consonant; as a prefix and usually in the middle or at the end of a syllable it is a vowel. See Guide to Pronunciation // 145 178-9 272."

"Something shaped like the letter Y; a forked piece resembling in form the letter Y."

"One of the forked holders for supporting the telescope of a leveling instrument or the axis of a theodolite; a wye."

"A forked or bifurcated pipe fitting."

"A portion of track consisting of two diverging tracks connected by a cross track."

"I."