1. Annual wiry-stemmed North American weed with minute scalelike leaves and small yellow flowers
   - orange grass, pineweed, pine-weed, Hypericum gentianoides

Type of: St John's wort

• Acinonyx jubatus
• Acinos
• Acinos arvensis
• acinose
• acinous
• acinus
• Acipenser
• Acipenser huso
• Acipenser transmontanus
• Acipenseridae
• ack-ack
• ack-ack gun
• ackee
• acknowledge
• acknowledgeable
• acknowledged
• acknowledgement
• acknowledgment
• ACLANT
• aclinic line
• acme
• acne
• acne rosacea
• acne vulgaris
• acned