Traditional; typically used in the context of clothing, grooming, and other aspects of one's personal presentation. An item is "trad" if it either (a) was manufactured during the relevant time period, usually the 1930s through 1950s, or (b) is a modern item with design aspects inherited from or complementary with that time period.

A phrase to describe someone who is cognitively degenerating. Synonym of "going off the deep end". Can have varying degrees of severity.

Reference to the song "Hey You" by Pink Floyd. The line "and the worms ate into his brain" makes no sense in an otherwise linear and literal narration throughout the lyrics.

Adjective used by rock climbers to describe a technique of self-protection or a particular climb which does not involve the use of bolts.

trad is short for traditional, a way of saying somthing is particularly cool or hip. similar to rad.

Someone who believes in the traditional, non-reformist view of Hindu dharma, especially as applied to the political aspect of Hinduism, also known as Hindutva.

A skinhead who is not racist, nor vehemently anti-racist (sharp), but is apolitical and interested only in "traditional" skinhead music and culture.

Something being of traditional Irish origin.