1. Depressed like a navel

See also: concave

• Tertullian
• Terylene
• terza rima
• terzetto
• TESL
• tesla
• Tesla coil
• TESOL
• tessella
• tessellate
• tessellated
• tessellation
• tessera
• tesseract
• Tessin
• tessitura
• test
• test ban
• test bed
• test case
• test copy
• test drive
• test driver
• test equipment
• test fly