部首 — meaning in English

English meaning

• radical adjective Favoring extreme, fundamental change, especially in politics or society.
• spanner noun A hand tool used to grip and turn nuts and bolts (called a "wrench" in American English).
• wrench noun US: a hand tool used to grip and turn nuts, bolts, or pipes; called a spanner in British English.

Senses

部首 is used for these senses in English:

• radical (linguistics) In logographic writing systems such as the Chinese writing system, the portion of a character (if any) that provides an indication of its meaning, as opposed to phonetic.
• spanner (Commonwealth, UK, Irish) A hand tool for adjusting nuts and bolts.
• wrench (US, Canada, Philippines) A hand tool for making rotational adjustments, such as fitting nuts and bolts, or fitting pipes. [from 18th c.]

radical — full definition

1. adjective Favoring extreme, fundamental change, especially in politics or society.
2. adjective Thorough and far-reaching; affecting the most basic or essential part of something.
3. noun A person who holds extreme or fundamentally reforming political views.
4. noun In chemistry, a group of atoms that behaves as a single unit in reactions (often short for "free radical").

spanner — full definition

1. noun A hand tool used to grip and turn nuts and bolts (called a "wrench" in American English).
2. noun An unexpected problem or obstacle, especially in the phrase "a spanner in the works."