English-Thai Dictionary
countersink
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Webster's 1913 Dictionary
COUNTERSINK
Coun "ter *sink ` (koun "tr-sk `; 277 ), v. t. [imp. & p. p. Countersunk (-s; p. pr. & vb. n. Countersinking.]
1. 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.
2. To cause to sink even with or below the surface; as, to countersink a screw or bolt into woodwork.
COUNTERSINK
COUNTERSINK Coun "ter *sink `, n.
1. An enlargement of the upper part of a hole, forming a cavity or depression for receiving the head of a screw or bolt.
Note: In the United States a flaring cavity formed by chamfering the edges of a round hole is called a countersink, while a cylindrical flat-bottomed enlargement of the mouth of the hole is usually called a conterbore.
2. A drill or cutting tool for countersinking holes.
New American Oxford Dictionary
countersink
coun ter sink |ˈkountərˌsiNGk ˈkaʊntərsɪŋk | ▶verb ( past and past participle countersunk |-ˌsəNGk | ) [ with obj. ] enlarge and bevel the rim of (a drilled hole ) so that a screw, nail, or bolt can be inserted flush with the surface. • drive (a screw, nail, or bolt ) into such a hole.
Oxford Dictionary
countersink
coun ¦ter |sink |ˈkaʊntəsɪŋk | ▶verb ( past and past participle countersunk ) [ with obj. ] enlarge and bevel the rim of (a drilled hole ) so that a screw, nail, or bolt can be inserted flush with the surface. • drive (a screw, nail, or bolt ) into a countersunk hole.
Sanseido Wisdom Dictionary
countersink
c ó unter s ì nk 動詞 →sink 他動詞 (ねじやボルトの頭が埋まるように )〈穴の口 〉を円 (錐 )形に広げる, …に皿穴を開ける ; 〈ねじやボルトの頭 〉を皿穴に埋める .名詞 C 皿穴 ; 皿穴用もみ 錐 （きり ）.
The Wordsmith Dictionary