ELM - A tree of the genus Ulmus of the family Ulmaceae, large deciduous trees with alternate stipulate leaves and small apetalous flowers.
LET - To allow to, not to prevent (+ infinitive, but usually without to).
MET - Simple past tense and past participle of meet.
MUM - Mother.
PET - An animal kept as a companion.
EMU - A large flightless bird native to Australia, Dromaius novaehollandiae.
LUMP - Something that protrudes, sticks out, or sticks together; a cluster or blob; a mound, hill, or group.
MELT - Molten material, the product of melting.
MULE - A generally sterile male or female hybrid offspring of a male donkey and a female horse.
MUTE - To silence, to make quiet.
PLUM - The edible, fleshy stone fruit of Prunus domestica, often of a dark red or purple colour.
PELT - The skin of a beast with the hair on; a raw or undressed hide; a skin preserved with the hairy or woolly covering on it.
LUTE - A fretted stringed instrument, similar to a guitar, having a bowl-shaped body or soundbox.
TEMP - A temporary employee, usually in an office.
PLUME - A feather of a bird, especially a large or showy one.
PUMMEL - To hit or strike heavily and repeatedly.
PLUMMET - To drop swiftly, in a direct manner; to fall quickly.