Anagrams of: CEILMPUU

• a light glass formed on the surface of some lavas; used as an abrasive

• rub with pumice, in order to clean or to smoothen

• a grouping of a number of similar things

• a compact mass

• a heavy dull sound (as made by impact of heavy objects)

• make or move along with a sound as of a horse's hooves striking the ground

• come together as in a cluster or flock

• walk clumsily

• gather or cause to gather into a cluster

• cup-shaped structure of hardened bracts at the base of an acorn

• a sucker on the feet of certain flies

• of or related to cumulous clouds

• a globular cloud

• a collection of objects laid on top of each other

• anything that resembles a feather in shape or lightness

• a feather or cluster of feathers worn as an ornament

• the light horny waterproof structure forming the external covering of birds

• rip off; ask an unreasonable price

• be proud of

• deck with a plume

• clean with one's bill

• form a plume

• dress or groom with elaborate care

• the weather in some location averaged over some long period of time

• urge or force (a person) to an action; constrain or motivate

• cause to move forward with force

• a small porous bowl made of bone ash used in assaying to separate precious metals from e.g. lead