butanoic acid/byoohtəʹnoh·ik/ noun

• drongo
• drool
• droop
• drop
• drop a brick
• drop a clanger
• drop anchor
• drop back
• drop behind
• drop curtain
• drop dead
• drop-dead
• drop/fall into somebody's lap
• drop-forge
• drop goal
• drop hammer
• drop handlebars
• drop kick
• drop-kick
• drop leaf
• droplet
• drop off
• drop-off
• drop one's aitches
• drop one's guard