An individual who is at ease and self-assured; one who is calm and composed in interactions with others.
A person who performs or appreciates jazz, especially one whose style of speech and movement is relaxed and rhythmic.
An aloof person.
A huge mass of ocean-floating ice which has broken off a glacier or ice shelf
An impending disastrous event whose adverse effects are only beginning to show, in reference to one-tenth of the volume of an iceberg being visible above water.