'Tip-up' definitions:

Definition of 'tip-up'

From: WordNet
adjective
Constructed so as to tip up or out of the way; "the little tip-up seat of the taxi"

Definition of 'Tip-up'

From: GCIDE
  • Tip-up \Tip"-up`\, n. (Zool.) The spotted sandpiper; -- called also teeter-tail. See under Sandpiper. [1913 Webster]

Definition of 'tip-up'

From: GCIDE
  • collapsible \collapsible\ adj. Capable of collapsing or being collapsed; as, a collapsible boat. [Narrower terms: telescopic; tip-up] Also See: folded. Antonym: noncollapsible.
  • Syn: collapsable. [WordNet 1.5]