stirps /stûrps/, also stirp /stûrp/

1. (a person and his or her descendants forming) a branch of a family (esp law)
2. Pedigree
3. A category in biological classification, eg (zoology) a superfamily, family or subfamily, or (botany) a rootstock that retains characteristics in cultivation

stirpˈiculture noun

Selective breeding

• under one's belt
• under one's breath
• under one's hand
• under one's hat
• under one's nose
• under one's own steam
• under one's thumb
• under one's very nose
• underpaid
• under pain of
• underpainting
• underpaintings
• underpants
• underpart
• underparts
• underpass
• underpasses
• underpassion
• underpassions
• underpay
• underpaying
• underpayment
• underpayments
• underpays
• underpeep