9-Letter Words Containing: SIL

• convert to a fossil

• become mentally inflexible

• (of gases) capable of expansion

• the commercially bred hairless white caterpillar of the domestic silkworm moth which spins a cocoon that can be processed to yield silk fiber; the principal source of commercial silk

• larva of a saturniid moth; spins a large amount of strong silk in constructing its cocoon

• any of numerous plants of the genus Asclepias having milky juice and pods that split open releasing seeds with downy tufts

• capable of being protruded or stretched or opened out

• any of a large class of compounds that have alternate silicon and oxygen atoms

• (classical mythology) a serpent (or lizard or dragon) able to kill with its breath or glance

• ancient brass cannon

• small crested arboreal lizard able to run on its hind legs; of tropical America