BET - A wager, an agreement between two parties that a stake (usually money) will be paid by the loser to the winner (the winner being the one who correctly forecast the outcome of an event).
ROB - To steal from, especially using force or violence.
ROT - To suffer decomposition due to biological action, especially by fungi or bacteria.
TOE - Each of the five digits on the end of the foot.
TOO - Likewise.
ORB - A spherical body; a globe; especially, one of the celestial spheres; a sun, planet, or star.
BOO - A loud exclamation intended to scare someone, especially a child. Usually used when one has been hidden from the victim and then suddenly appeared unexpectedly.
BOT - The larva of a bot fly, which infests the skin of various mammals, producing warbles, or the nasal passage of sheep, or the stomach of horses.
BRO - Brother; a male sibling.
BOOT - A heavy shoe that covers part of the leg.
BORE - To make a hole through something.
ROBE - A long loose outer garment, often signifying honorary stature.
ROOT - The part of a plant, generally underground, that absorbs water and nutrients.
TORE - Hard, difficult; wearisome, tedious.
ROTE - The process of learning or committing something to memory through mechanical repetition, usually by hearing and repeating aloud, often without full attention to comprehension or thought for the meaning.
OBOE - A soprano and melody wind instrument in the modern orchestra and wind ensemble. It is a smaller instrument and generally made of grendilla wood. It is a member of the double reed family.
ROBOT - A machine built to carry out some complex task or group of tasks, especially one which can be programmed.
REBOOT - An instance of rebooting.