Plural of billbug; small weevil insects with a long snout that damage grass, grain crops, and other plants.
From 'bill' (the long pointed snout of the insect, resembling a bird's bill) plus 'bug.' This agricultural term became common as farming became more scientific.
Billbugs are major agricultural pests because they spend their entire life cycle hidden inside plant stems—farmers have to scout fields carefully to catch them early.
Complete word intelligence in one call. Free tier — 50 lookups/day.