ABS - The abdominal muscles.
BAT - Any of the small, nocturnal, flying mammals of the order Chiroptera, which navigate by means of echolocation. They look like a mouse with membranous wings extending from the forelimbs to the hind limbs or tail. Altogether, there are about 1,000 bat species in the world.
BIT - A piece of metal placed in a horse's mouth and connected to reins to direct the animal.
ITS - The one (or ones) belonging to it.
SAT - Simple past tense and past participle of sit.
SIT - To be in a position in which the upper body is upright and the legs (especially the upper legs) are supported by some object.
TAB - A small flap or strip of material attached to something, for holding, manipulation, identification, etc.
TIS - Plural of til.
SIS - Shortened form of sister.
BAS - Plural of ba.
BAIT - Any substance, especially food, used in catching fish, or other animals, by alluring them to a hook, snare, trap, or net.
BIAS - Inclination towards something; predisposition, partiality, prejudice, preference, predilection.
STAB - An act of stabbing or thrusting with an object.
SASS - Sarcasm, backtalk, cheek.
BASIS - A starting point, base or foundation for an argument or hypothesis.
ASSIST - A helpful action or an act of giving.
STASIS - A slackening or arrest of the blood current, due not to a lessening of the heart's beat, but to some abnormal resistance of the capillary walls.
BASSIST - A musician who plays a bass instrument.