The kanji 惟 generally conveys the idea of thinking, considering, reflecting, or contemplating. It implies a deep thought process, a focused and careful consideration of something, often involving introspection or judgment. It can also suggest an idea, a thought, or something that is regarded as essential.

・On-yomi (音読み): い (i) ・Kun-yomi (訓読み): おも（う） (omo(u))

⚫︎ 惟一 Translation: The only one; the sole; the unique. ⚫︎ 惟有 Translation: Only; the only thing is... ⚫︎ 思维 (This example uses Chinese characters, as the Japanese language uses this compound as well.) Translation: Thought; thinking; train of thought.

The kanji 惟 is a phono-semantic compound (形声文字). The semantic (meaning) component is 忄 (りっしんべん - "kokoro" or "heart"), and the phonetic (sound) component is 隹 (すい - "sui", represents the sound). Therefore, the meaning has a relation to "kokoro" (heart/mind). The original meaning of this character is related to thinking and considering. The character was created to reflect the activity of thinking within the heart. The evolution of the character from its original form involved the modification of the components but retained the basic structure reflecting thought and reflection.