Entry 3 senses · 2 variants Webster, 1913 Holm /(hōm; 277)/ · IPA /hoʊm/ n. n. 01 n. A common evergreen oak, of Europe (Quercus Ilex); -- called also ilex, and holly. 1. A common evergreen oak, of Europe (Quercus Ilex); -- called also ilex, and holly.(Bot.) Also: ilex, holly 02 n. An islet in a river. 1. An islet in a river. 2. Low, flat land. “The soft wind blowing over meadowy holms.” — Tennyson. Phrases & compounds Holm thrush — the missel thrush.