Preposition: of

• fish: Figure 6. How water is pumped through the gills of fish.

Converse of object

• have: Fish have gills to get the oxygen out of the water.

• clog: They then produce mucus which clogs there gills causing them to die.

• use: Their bodies are covered in scales and, like sharks, they use gills to get oxygen from water.

• develop: Does the human fetus temporarily develop gills, a tail, and a yolk sac?

Adjective modifier

• feathery: On emerging from the egg, the tadpoles have feathery external gills.

• pale: White or pale straw gills radiate from the point of attachment where they may fork.

• external: The larvae have external gills, which absorb oxygen directly from the water.

• red: Whole fish should have clear, bright eyes and bright red gills.

• brown: All these specimens had brown gills as shown in the photographs.

Modifies a noun

• raker: Great care must be taken to not damage the gill rakers.

• fluke: In large numbers both skin and gill flukes represent a serious threat to fish health.

• slit: Most fish have gill slits on the sides where the head joins the body.

• filament: Dactylogyrus 01 ( Gill fluke ) ( 212 kb ) A gill fluke on the edge of a gill filament at 100x magnification.

• net: Ghost fishing by lost cod gill nets in the Baltic Sea.

• arch: Can a greater amberjack ever have 23 gill rakers on the first gill arch?

Noun used with modifier

• monofilament: It was caught in a monofilament gill net off the southwest Coast of Guernsey in about 60 feet of water.