Crossword puzzle clue "soil samples"

BORING, an inner cavity

CLAY, to purify (e.g. sugar) with clay

LOAM, to cover with loam

AB, an abdominal muscle

ALE, a kind of beer, made without using hops as a flavouring, also YILL

(Spenser) a clerical garb worn on the shoulders, also AMICE

(Sinhalese) a large S American snake

to put to the proof, to make trial of