[semi.vow.el] n (1530) 1: a speech sound (as /y/, /w/, or /r/) that has the articulation of a vowel but that is shorter in duration and is treated as a consonant in syllabication
2: a letter representing a semivowel
[semi.vow.el] n (1530) 1: a speech sound (as /y/, /w/, or /r/) that has the articulation of a vowel but that is shorter in duration and is treated as a consonant in syllabication
2: a letter representing a semivowel
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012