Dexter \Dex"ter\, n. [Prob. so named after the original breeder.]

One of a breed of small hardy cattle originating from the Kerry breed of Ireland, valuable both for beef and milk. They are usually chiefly black, sometimes red, and somewhat resemble a small shorthorn in build. Called also Dexter Kerry.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Dexter \Dex"ter\, a. [L.,; akin to Gr. ?, ?, Skr. dakshi?a (cf. daksh to be strong, suit); Goth. taihswa, OHG. zeso. Cf. Dexterous.]

1. Pertaining to, or situated on, the right hand; right, as opposed to sinister, or left.

On sounding wings a dexter eagle flew. --Pope.

2. (Her.) On the right-hand side of a shield, i. e., towards the right hand of its wearer. To a spectator in front, as in a pictorial representation, this would be the left side.

Dexter chief, or Dexter point (Her.), a point in the dexter upper corner of the shield, being in the dexter extremity of the chief, as A in the cut.

Dexter base, a point in the dexter lower part or base of the shield, as B in the cut.

Source: Webster's Revised Unabridged Dictionary (1913)