9-Letter Words Containing: _,A,L,O,O

• A type of volcanic ash used for mortar or for cement which sets under water.

• conceal one's true motives from especially by elaborately feigning good intentions so as to gain an end

• sessile aquatic animal forming mossy colonies of small polyps each having a curved or circular ridge bearing tentacles; attach to stones or seaweed and reproduce by budding

• of or relating to or denoting the Paleozoic era

• from 544 million to about 230 million years ago

• acknowledge faults or shortcomings or failing

• defend, explain, clear away, or make excuses for by reasoning

• very dark wood of any of several blackwood trees

• any of several hardwood trees yielding very dark-colored wood