us·nic acid 
(ŭsnĭk)
(ŭsnĭk)n.
An antibacterial substance, C18H16O7, obtained from lichens of several genera, including Usnea.
- take at someone's word
- take at word
- takeaway
- take away from
- take a wee
- take a whack at
- take a whiz
- take back
- take breath away
- take by storm
- take/call/bring to task
- take care
- take care of
- take charge
- take-charge
- take cover
- take down
- takedown
- take down a peg
- take down the garden path
- consult
- consultancy
- consultant
- consultantship
- consultation