Center \Cen"ter\, or Centre \Cen"tre\, seal \seal\ . (Gas Manuf.) A compound hydraulic valve for regulating the passage of the gas through a set of purifiers so as to cut out each one in turn for the renewal of the lime.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Center \Center\, or Centre \Centre\, punch \punch\ . (Mech.)
   (a) A punch for making indentations or dots in a piece of work, as for suspension between lathe centers, etc.
   (b) A punch for punching holes in sheet metal, having a small conical center to insure correct locating.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Center \Cen"ter\, Centre \Cen"tre\ v. i. [imp. & p. p. Centered or Centred; p. pr. & vb. n. Centering or Centring.]

1. To be placed in a center; to be central.

2. To be collected to a point; to be concentrated; to rest on, or gather about, as a center.

Where there is no visible truth wherein to center, error is as wide as men's fancies. --Dr. H. More.

Our hopes must center in ourselves alone. --Dryden.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Center \Cen"ter\, Centre \Cen"tre\, v. t.

1. To place or fix in the center or on a central point. --Milton.

2. To collect to a point; to concentrate.

Thy joys are centered all in me alone. --Prior.

3. (Mech.) To form a recess or indentation for the reception of a center.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Centre \Cen"tre\, n. & v. See Center.

Source: Webster's Revised Unabridged Dictionary (1913)