daddy longlegs

Short definition from Wiktionary

Noun

1. 1
   The cranefly; any insect of the suborder Tipulomorpha.
2. 2
   Any (non-spider) arachnid of the order Opiliones, mostly with long thin legs.
3. 3
   The daddy long-legs spider, any spider of the family Pholcidae.
4. 4
   Alternative spelling of daddy longlegs.