(nautical, aircraft) On the beam; at a right angle to the centerline or keel of a vessel or aircraft; being at a bearing approximately 090 Degrees or 270 Degrees relative.

(nautical, aircraft) Alongside or abreast; opposite the center of the side of the ship or aircraft.

(nautical) Alongside.

Beaming, shining (especially with reference to a person's face or eyes).

The dignity, estate, term, or jurisdiction of an abbot or abbess.

A means of defense formed by felled trees, or sometimes by bent trees, the ends of whose branches are sharpened and directed outwards, or against the enemy, and more recently fortified with barbed wire.

Of or pertaining to the abdomen; ventral. / (ichthyology) Having the ventral fins under the abdomen and behind the pectoral fins. / (ichthyology) Ventral, in describing a fin.

(zoology, obsolete) A fish of the order Abdominales. / (colloquial, usually plural only) An abdominal muscle.

(archaic) Towards the back or rear; backwards. / (archaic) In the rear; a distance behind. / By surprise; startled; dumbfounded. (see usage)

(obsolete) An abacus.