countersink – מילון אנגלי-אנגלי
countersink
v.
make (the head of a bolt, nail, etc.) flush or level with a surface
Countersink
A
countersink (symbol:
⌵) is a
conical hole cut into a manufactured object, or the cutter used to cut such a hole. A common use is to allow the head of a countersunk bolt or screw, when placed in the hole, to sit flush with or below the surface of the surrounding material (by comparison, a
counterbore makes a flat-bottomed hole that might be used with a socket-head capscrew). A countersink may also be used to remove the
burr left from a drilling or
tapping operation thereby improving the finish of the product and removing any hazardous sharp edges.
countersink
Noun
1. a hole (usually in wood) with the top part enlarged so that a screw or bolt will fit into it and lie below the surface
(hypernym) hole
(derivation) set
2. a bit for enlarging the upper part of a hole
(synonym) counterbore, countersink bit
(hypernym) bit
Verb
1. insert (a nail or screw below the surface, as into a countersink)
(synonym) set
(hypernym) bury, sink
Countersink
(v. t.)
To chamfer or form a depression around the top of (a hole in wood, metal, etc.) for the reception of the head of a screw or bolt below the surface, either wholly or in part; as, to countersink a hole for a screw.
(v. t.)
To cause to sink even with or below the surface; as, to countersink a screw or bolt into woodwork.
(n.)
An enlargement of the upper part of a hole, forming a cavity or depression for receiving the head of a screw or bolt.
(n.)
A drill or cutting tool for countersinking holes.
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter.
About
countersink
countersink /'kauntəsiɳk/- ngoại động từ (kỹ thuật)
- khoét loe miệng (để đánh bóng hoặc ốc bắt vào không lồi lên)
- đóng (đầu đinh) vào lỗ khoét loe miệng, bắt (đầu ốc) vào lỗ khoét loe miệng
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