n.[C]

1. 【植】刺果；刺球状花序
2. 有芒刺的草（或其他植物）
3. 粘附着的东西
4. （金属或木材被钻或切后留下的）毛边，毛口
5. （铆铆钉时用的）小垫圈
6. （牙医用）圆头锉，牙钻

vt.

1. 从……除去芒刺
2. 在……上形成毛边

n.[S1]

1. （英国北方人发音中）颤动小舌的r音；（苏格兰语中）颤动舌尖的r音；粗浊的地方音
   She speaks with a soft rural burr.

   她说话带着乡下人的轻柔的r音。

2. 呼呼声

vi.

1. 发颤动小舌（或舌尖）的r音
2. 粗声粗气地说话

vt.

1. 以粗喉音发出

n.

1. 磨石，臼石[C]

n.

1. a whirring sound.
   ▸a rough pronunciation of the letter r, as in some regional accents.
2. (also bur) a rough edge left on a metal object by the action of a tool.
3. (also bur) a small drill used in woodworking, dentistry, or surgery.
4. a siliceous rock used for millstones.
   ▸a whetstone.
5. (also bur) a prickly seed case or flower head that clings to clothing and animal fur.
6. (also bur) [as modifier] denoting wood containing a pattern of dense swirls in the grain.
7. the coronet of a deer's antler.

v.

1. make a whirring sound.
   ▸speak with a burr.
2. form a rough edge on (metal).