1. In a malignant manner, as of a tumour that spreads

See also: malignant

• birth control device
• birth control pill
• birth defect
• birth pangs
• birth prevention
• birth trauma
• birth-control campaigner
• birth-control reformer
• birthday
• birthday cake
• birthday card
• birthday gift
• birthday party
• birthday present
• birthday suit
• birthing
• birthing coach
• birthmark
• birthplace
• birthrate
• birthright
• birthroot
• birthstone
• birthwort
• birthwort family