1. Plural of axillar; feathers or hair located in or near the armpit or axilla of a bird or animal.
Usage: ornithology; zoology

Examples

• The bird's axillars are darker than its wing coverts.
• Ornithologists examine the axillars to identify species differences.
• The axillars provide insulation in the underarm region of birds.
• When the wing is folded, the axillars remain partially visible.
• The pattern of axillars can vary significantly among different bird species.