chil-I.
variant of chilo-1, used before vowels.
II.
variant of chilo-2, used before vowels.
chil-
combining form 
or chilo- also cheil- or cheilo-
Etymology: New Latin, from Greek cheil-, cheilo-, from cheilos — more at gill 
 : lip 
< Chilopsis >
< Chilomastix >
or chilo- also cheil- or cheilo-
< Chilopsis >
< Chilomastix >