The No. 3 prop in a scrum, named so because his/her head is in between those of the opposition hooker and loosehead when the scrum is formed.

The No. 3 prop in a scrum. See also loosehead; prop.

the No. 3 prop in a scrum due to his head being between the opposition's hooker and loosehead prop's shoulders. A scrum can also win a tighthead by taking possession of the ball in a scrum fed by the other pack.