'carriage bolt' definitions:
Definition of 'carriage bolt'
(from WordNet)
noun
A roundheaded bolt for timber; threaded along part of the shank; inserted into holes already drilled
Definition of 'carriage bolt'
From: GCIDE
- carriage bolt \carriage bolt\ n. a type of bolt threaded only at the end opposite the head, used mostly for fastening pieces of timber together, and inserted into pre-drilled holes. [PJC]