1. North American fern having tall erect pinnate fronds and a few sporogenous pinnae at or near the centre of the fertile fronds
   - interrupted fern

Type of: flowering fern, osmund

• thruway
• Thryothorus
• Thryothorus ludovicianus
• Thucydides
• thud
• thudding
• thug
• thuggee
• thuggery
• thuggish
• Thuja
• Thuja occidentalis
• Thuja orientalis
• Thuja plicata
• Thujopsis
• Thujopsis dolobrata
• Thule
• thulium
• thumb
• thumb index
• thumbed
• thumbhole
• thumbnail
• thumbnut
• thumbprint