(chat) v.i. chat·ted, chat·ting
To converse in an easy or gossipy manner; talk familiarly.
—noun
1. Easy and familiar speech; informal conversation.
2. Any of several singing birds: so called from their notes. See synonyms under CONVERSATION. [Short for CHATTER]

(chat) noun Bot.
The inflorescence, catkin, or seed of various plants, as the ament of the pine, the samara of the maple, etc. [<F, cat; so called from its appearance]