chōkeidesu
1. Long diameter.
Noun
#1000567
1. Long diameter.
1. eldest brother
1. papilionaceous; butterfly-shaped
1. sphenoid bone (of the skull)
1. major axis
1. redundant system (string, line)
1. semi-major axis
1. butterfly valve
1. Eldest brother's; Older brother's
1. Longest brother; Eldest brother